A group of men are cleaning up debris
The men are relaxing.
People can't be relaxing and cleaning at the same time.
exists e1 s1 x1 x2 x3.(a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_clean(e1) & n_debris(x3) & of(x1,x2) & n_man(x2) & n_group(x1))
exists e1 x1.(n_man(x1) & Actor(e1,x1) & v_relax(e1))