Two women talk and laugh while people walk by.
Two women argue at the market.
The two women don't argue at the market if they talk and laugh while people walk by.
(-x)
exists e1 x1 x2.(n_market(x2) & at(e1,x2) & Actor(e1,x1) & v_argue(e1) & n_woman(x1) & card_eq_2(x1))