Anne is not green. Harry is the uncle of Erin. If The uncle of Erin is Harry then Erin is young. The brother of Anne is Harry if The grandmother of Fiona is not Erin. If Bob is Dave's mother then Harry is not the brother of Anne. If Erin is not Fiona's grandmother then The sister of Gary is not Charlie. If Erin is not Fiona's grandmother then Erin is cold. If Erin is not Fiona's grandmother then Erin is not green. Bob is Dave's mother if Harry is nice. Harry is nice if Anne is not green. The grandmother of Charlie is not Gary if The brother of Anne is not Harry. If Harry is not Anne's brother then Charlie is Gary's sister. Gary is Charlie's grandmother if Erin is cold. If Gary is not the grandmother of Charlie then Erin is not green.