Two men play backgammon while a third looks on on a sidewalk.
People are playing outside while being watched.
People who play backgammon are playing outside.
exists e1 s1 s2 x1 x2 x3 x4.(on(e1,x4) & n_sidewalk(x4) & a_on(s2) & Manner(e1,s2) & while(e1,x3) & n_look(x3) & a_third(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_backgammon(x2) & n_man(x1) & card_eq_2(x1))
exists e2 e1 s1 x1.(while(e1,e2) & Theme(e2,x1) & v_watch(e2) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & n_people(x1))