Question: Identify the fallacies of relevance and weak induction committed by the following arguments. If no fallacy is committed, write "no fallacy.
Members of the jury, you have heard Shirley Gaines testify that the defendant did not offer to perform acts of prostitution for the undercover police officer. But Gaines is a known prostitute herself and a close friend of the defendant. Also, only a year ago she was convicted of twelve counts of perjury. Therefore, you should certainly discount Gaines's testimony.