Some people hanging out on a large backyard deck.
the people are seamen
The people are not necessarily seamen.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & a_out(s2) & Manner(e1,s2) & on(e1,x3) & n_deck(x3) & of(x3,x4) & n_backyard(x4) & a_large(s1) & Theme(s1,x3) & Actor(e1,x2) & v_hang(e1) & (x1 = x2) & n_people(x1))
exists s1 x1.(n_people(x1) & Theme(s1,x1) & a_seamen(s1))