Two men with guitars and one with a microphone stand on a stage in front of a small group of people.
The men are great at guitar.
Just because two men are with guitars does not mean the men are great at (playing) guitar.
exists s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(a_topic(x1) & in(x1,x7) & of(x7,x8) & of(x8,x9) & n_people(x9) & n_group(x8) & a_small(s2) & Theme(s2,x8) & n_front(x7) & with(x1,x5) & on(x5,x6) & n_stage(x6) & n_stand(x5) & a_microphone(s1) & Theme(s1,x5) & with(x1,x2) & subset_of(x4,x2) & n_thing(x4) & card_eq_1(x4) & subset_of(x3,x2) & n_guitar(x3) & n_man(x1) & card_eq_2(x1))
exists s1 x1 x2.(n_man(x1) & at(s1,x2) & n_guitar(x2) & Theme(s1,x1) & a_great(s1))