11. The method of claim 10 , wherein detecting whether the input text is responsive to a prompt comprises: selecting one or more past prompts; assigning the input text, using the content-based model, to either one of the one or more past prompts or to one of one or more current prompts; and if the input text is assigned to a past prompt, flagging the input text for manual checking as possibly not responsive to the one or more current prompts.
11. The method of claim 10 , wherein detecting whether the input text is responsive to a prompt comprises: selecting one or more past prompts; assigning the input text, using the content-based model, to either one of the one or more past prompts or to one of one or more current prompts; and if the input text is assigned to a past prompt, flagging the input text for manual checking as possibly not responsive to the one or more current prompts. 12. The method of claim 11 , wherein the content-based model is an ISA model.