My answer was not enough?

So I met with my prof (and two other people) to discuss my paper. My prof asked me what was the process and how do I define terms. After I explained those terms, my prof said to the facilitator that she is not satisfied with my definitions. She didn’t say it’s wrong, but that she is not satisfied. Also, when I asked what are the evidence that it is not my paper, and the prof could not bring out evidence.

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