A street performer playing a drum set in front of a crowd of people.
A person is playing drums.
a street performer is a person and a set often means plural, thus drum set means drums
exists e1 e2 x1 x2 x3 x4 x5 x6 x7.(in(e2,x5) & of(x5,x6) & of(x6,x7) & n_people(x7) & n_crowd(x6) & n_front(x5) & Theme(e2,x1) & v_set(e2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_drum(x4) & (x1 = x3) & n_performer(x1) & of(x1,x2) & n_street(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_drum(x2) & n_person(x1))