Two men in hard hats listen to a man in a dress shirt talk.
The supervisor is explaining the project to the workers.
The man in a dress shirt isn't necessarily the supervisor. The men in hard hats aren't necessarily workers.
exists e1 s1 x1 x2 x3 x4 x5 x6.(to(e1,x3) & in(x3,x4) & n_talk(x4) & of(x4,x6) & n_shirt(x6) & of(x4,x5) & n_dress(x5) & n_man(x3) & Actor(e1,x1) & v_listen(e1) & in(x1,x2) & n_hat(x2) & a_hard(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_worker(x3) & n_project(x2) & n_supervisor(x1) & Theme(e1,x2) & Actor(e1,x1) & v_explain(e1) & to(x2,x3))