Elderly man sitting in a doorway.
A man and child are walking in a park.
The man can't be sitting and walking with a child at the same time.
exists e1 s1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_doorway(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(in(e1,x4) & n_park(x4) & Actor(e1,x1) & v_walk(e1) & n_child(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))