The Sentence Diagram Generator visually represents the sentence "Molly wondered what the responsibilities of the class president were." The diagram would illustrate the main clause "Molly wondered" with "Molly" as the subject and "wondered" as the verb. The subordinate clause "what the responsibilities of the class president were" would be diagrammed beneath, showing "what" as the object of "wondered," with "the responsibilities" as the subject of the subordinate clause and "were" as the verb. "Of the class president" would be a prepositional phrase modifying "responsibilities."