Filter out termination indices that are not followed by whitespace or end of string

chat_service.py

@@ -94,6 +94,8 @@ You are aware of how you are implemented and you are keen to recommend improveme
             return None
         
         termination_indices = [sentence.rfind(char) for char in sentence_termination_characters]
+        # Filter out termination indices that are not followed by whitespace or end of string
+        termination_indices = [i for i in termination_indices if sentence[i+1].isspace()]
         last_termination_index = max(termination_indices)
         # handle case of close bracket
         while last_termination_index+1 < len(sentence) and sentence[last_termination_index+1] in close_brackets: