A group of people playing music on the street in front of a crowd.
A group of people are dancing for the president.
Playing music and dancing are different things. The president is not a crowd.
exists e1 x1 x2 x3 x4 x5 x6 x7.(n_street(x5) & a_topic(x1) & of(x1,x2) & in(e1,x6) & of(x6,x7) & n_crowd(x7) & n_front(x6) & on(e1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_music(x4) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_president(x3) & for(e1,x3) & Actor(e1,x1) & v_dance(e1) & of(x1,x2) & n_people(x2) & n_group(x1))