A woman and a child clean up a beach.
A Woman and a child play in park.
One cannot clean up and play at the same time.
exists e1 s1 x1 x2 x3 x4.(a_up(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x1) & v_clean(e1) & n_beach(x4) & subset_of(x3,x1) & n_child(x3) & subset_of(x2,x1) & n_woman(x2))
exists s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & in(x2,x4) & n_park(x4) & n_play(x2) & of(x2,x3) & n_child(x3) & subset_of(x1,s1) & ne_org_woman(x1))