Guy plays guitar at a concert.
The man is playing his guitar for a large crowd.
All concerts do not have a large crowd.
exists e1 x1 x2 x3.(ne_nam_guy(x1) & at(e1,x3) & n_concert(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2))
exists e1 s1 x1 x2 x3.(n_guitar(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & for(x2,x3) & n_crowd(x3) & a_large(s1) & Theme(s1,x3))