diff --git a/parser.rb b/parser.rb
index adaad3e..951bfb8 100644
--- a/parser.rb
+++ b/parser.rb
@@ -1,3 +1,9 @@
 def word_in_string?(word, string)
   # implement with your code here
-end
+  if string.match(/(?<![a-z])#{word}(?![a-z])/)
+    :yes
+  else
+    :no
+  end
+
+end
\ No newline at end of file