Two contractors at work behind a white mailbox.
Two people working outside.
The contractors are people and the mailbox is outside
exists s1 x1 x2 x3.(a_topic(x1) & behind(x1,x3) & n_mailbox(x3) & a_white(s1) & Theme(s1,x3) & at(x1,x2) & n_work(x2) & n_contractor(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(a_topic(x1) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))