premise: So Solid Crew are an English garage, grime and hip hop group originating from Battersea, London which achieved wide success in the early 2000s. The group consisted of a large number of members, the most notable being Lisa Maffia, Romeo and Harvey. They are generally credited with having paved the way for the current generation of crossover UK hip hop stars.
hypothesis: So Solid Crew had 4 members
reason: not clear how many people