A person sitting on chair in front of a crowd.
A man is lying down in front of a crowd.
The person cannot be sitting and lying at the same time.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x4) & of(x4,x5) & n_crowd(x5) & n_front(x4) & on(e1,x3) & n_chair(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_person(x1))
exists e1 s1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_crowd(x3) & n_front(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lie(e1) & n_man(x1))