diff --git a/src/compare/sexp.rs b/src/compare/sexp.rs
index 948181d..da3bb39 100644
--- a/src/compare/sexp.rs
+++ b/src/compare/sexp.rs
@@ -11,7 +11,6 @@ use nom::combinator::map;
 use nom::combinator::not;
 use nom::combinator::opt;
 use nom::combinator::peek;
-use nom::combinator::verify;
 use nom::multi::separated_list1;
 use nom::sequence::delimited;
 use nom::sequence::preceded;
diff --git a/src/parser/document.rs b/src/parser/document.rs
index 7887a9c..e5f5933 100644
--- a/src/parser/document.rs
+++ b/src/parser/document.rs
@@ -32,7 +32,6 @@ use super::source::Source;
 use super::util::exit_matcher_parser;
 use super::util::get_consumed;
 use super::util::start_of_line;
-use super::util::trailing_whitespace;
 use super::Context;
 
 #[derive(Debug)]
diff --git a/src/parser/element.rs b/src/parser/element.rs
index d4e773a..ea1f2b1 100644
--- a/src/parser/element.rs
+++ b/src/parser/element.rs
@@ -4,13 +4,10 @@ use super::greater_element::GreaterBlock;
 use super::greater_element::PlainList;
 use super::greater_element::PropertyDrawer;
 use super::greater_element::Table;
-use super::greater_element::TableRow;
 use super::lesser_element::Comment;
 use super::lesser_element::Paragraph;
-use super::lesser_element::TableCell;
 use super::source::Source;
 use super::Drawer;
-use super::PlainListItem;
 
 #[derive(Debug)]
 pub enum Element<'s> {
@@ -40,75 +37,3 @@ impl<'s> Source<'s> for Element<'s> {
         }
     }
 }
-
-impl<'s> Source<'s> for Paragraph<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for PlainList<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for PlainListItem<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for GreaterBlock<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for DynamicBlock<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for FootnoteDefinition<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for Comment<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for Drawer<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for PropertyDrawer<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for Table<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for TableRow<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
-
-impl<'s> Source<'s> for TableCell<'s> {
-    fn get_source(&'s self) -> &'s str {
-        self.source
-    }
-}
diff --git a/src/parser/greater_element.rs b/src/parser/greater_element.rs
index 8af70e4..96b2dcb 100644
--- a/src/parser/greater_element.rs
+++ b/src/parser/greater_element.rs
@@ -1,5 +1,6 @@
 use super::element::Element;
 use super::lesser_element::TableCell;
+use super::source::Source;
 
 #[derive(Debug)]
 pub struct PlainList<'s> {
@@ -68,3 +69,57 @@ pub struct TableRow<'s> {
     pub source: &'s str,
     pub children: Vec<TableCell<'s>>,
 }
+
+impl<'s> Source<'s> for PlainList<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for PlainListItem<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for GreaterBlock<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for DynamicBlock<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for FootnoteDefinition<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for Drawer<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for PropertyDrawer<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for Table<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for TableRow<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
diff --git a/src/parser/lesser_element.rs b/src/parser/lesser_element.rs
index 44b4f44..faf32a1 100644
--- a/src/parser/lesser_element.rs
+++ b/src/parser/lesser_element.rs
@@ -1,5 +1,6 @@
 use super::object::Object;
 use super::object::TextMarkup;
+use super::source::Source;
 
 #[derive(Debug)]
 pub struct Paragraph<'s> {
@@ -28,3 +29,21 @@ impl<'s> Paragraph<'s> {
         }
     }
 }
+
+impl<'s> Source<'s> for Paragraph<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for TableCell<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}
+
+impl<'s> Source<'s> for Comment<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}