Two women discussing at a red table in a restaurant.
Two women having lunch
Two women discussing at a red table in a restaurant does not infer anything about the time of day; therefore, we cannot assume they are having lunch.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_restaurant(x4) & at(e1,x3) & n_table(x3) & a_red(s1) & Theme(s1,x3) & Actor(e1,x2) & v_discuss(e1) & (x1 = x2) & n_woman(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_have(e1) & n_lunch(x3) & (x1 = x2) & n_woman(x1) & card_eq_2(x1))