premise: Lamont Jody Hawkins (born October 11, 1970), better known as U-God (short for Universal God), is an American rapper and member of the hip hop collective, Wu-Tang Clan. He has been with the group since its inception, and is known for having a deep, rhythmic flow that can alternate between being gruff or smooth.
hypothesis: Lamont Hawkins has been with his group for over 20 years.
reason: There is no clear clarification within the text that says how long the rapper has been a member of Wu-Tang. Therefore it's neither correct or incorrect to say he's been with them for over 20 years.