Two guitarist, and one drummer performing at a concert.
Two people are playing the saxaphone at a concert.
A guitarist does not play the saxophone.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & at(e1,x4) & n_concert(x4) & Actor(e1,x3) & v_perform(e1) & (x2 = x3) & n_drummer(x2) & card_eq_1(x2) & subset_of(x1,s1) & n_guitarist(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_saxaphone(x2) & at(e1,x3) & n_concert(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_people(x1) & card_eq_2(x1))