Two men play backgammon as a friend watches.
Three people are gathered, two of which are playing backgammon.
Two men play backgammon is same as three people are gathered, two of which are playing backgammon
exists e1 p1 x1 x2.(exists e2 x3.(Actor(e2,x3) & v_watch(e2) & n_friend(x3)) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_backgammon(x2) & n_man(x1) & card_eq_2(x1))
exists e2 e1 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x3) & v_play(e2) & n_backgammon(x6) & of(x3,x2) & rel(e1,x5) & n_thing(x5) & card_eq_2(x5) & Theme(e1,x4) & v_gather(e1) & (x3 = x4) & n_people(x3) & card_eq_3(x3) & n_thing(x1) & (x1 = x2))