Two men sit talking near a stone building.
Two men are sitting and talking while people walk by.
two men talking does not imply people walk by them.
exists e1 e2 x1 x2 x3.(for(e1,e2) & near(e2,x2) & n_building(x2) & of(x2,x3) & n_stone(x3) & Actor(e2,x1) & v_talk(e2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists e1 e2 e3 s1 x1 x2 x3 x4.(while(e2,x3) & a_by(s1) & Manner(e3,s1) & Theme(e3,x4) & v_walk(e3) & (x3 = x4) & n_people(x3) & Actor(e2,x2) & v_talk(e2) & n_man(x2) & card_eq_2(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))