context: Harry is not Gary's husband. Harry is Dave's grandfather. Charlie is not Bob's grandfather. If Charlie is not Bob's grandfather then Gary is furry. If The mother of Erin is not Dave then Gary is not furry. If Charlie is not Bob's grandfather then Charlie is red. Charlie is not red if Dave is not the mother of Erin. If Harry is the grandfather of Dave then Gary is not Fiona's mother. If Harry is quiet then Gary is Fiona's mother. If Harry is quiet then Fiona is round. If Harry is Dave's grandfather then The brother of Charlie is Gary. The brother of Charlie is not Gary if Dave is not Erin's mother. Harry is not rough if The mother of Fiona is not Gary. If Dave is not the mother of Erin then Harry is rough. If The grandfather of Bob is not Charlie then The husband of Gary is Erin. Erin is not Gary's husband if Harry is quiet. Fiona is not quiet if Charlie is not Bob's grandfather. Fiona is quiet if The mother of Erin is not Dave. Harry is not blue if Gary is the brother of Charlie. If The mother of Erin is not Dave then Harry is blue. If Gary is not the mother of Fiona then The father of Fiona is not Bob. If Dave is not the mother of Erin then The father of Fiona is Bob. Anne is Bob's grandmother if Dave is not the mother of Erin. If The husband of Gary is not Harry then Dave is not young. Dave is young if Fiona is round. If Harry is not blue then Charlie is the father of Erin. If The mother of Erin is not Dave then Charlie is not the father of Erin. If The grandfather of Dave is Harry then Dave is not white. If Fiona is round then Dave is white. If Bob is not the father of Fiona then The aunt of Erin is not Anne. The aunt of Erin is Anne if Fiona is round. If Harry is not rough then Dave is Charlie's father. Dave is not the father of Charlie if Harry is quiet. Fiona is furry if Dave is not white. If Dave is not Erin's mother then Fiona is not furry. If Anne is not the aunt of Erin then Bob is young. Bob is not young if Harry is quiet. Erin is nice if The father of Erin is Charlie. If Harry is quiet then Erin is not nice. If Anne is not Erin's aunt then Charlie is not quiet. Charlie is quiet if Anne is Bob's grandmother. If Charlie is not quiet then Harry is young. If Dave is not Erin's mother then Harry is not young. If The husband of Gary is Erin then Harry is round. Harry is not round if Harry is quiet. Erin is Dave's grandfather if Harry is quiet. If Dave is the father of Charlie then Erin is round. If The grandmother of Bob is Anne then Erin is not round.