A vocalist performs in front of onlooking fans.
A vocalist sings in front of fans.
Fans are in front of the vocalist therefore they are onlooking.
exists e2 e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_fan(x3) & Actor(e2,x3) & v_onlook(e2) & n_front(x2) & Actor(e1,x1) & v_perform(e1) & n_vocalist(x1))
exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x3) & of(x3,x4) & n_fan(x4) & n_front(x3) & n_sing(x1) & of(x1,x2) & n_vocalist(x2))