A man and a woman are sitting down and eating.
A couple is at a restaurant.
The man and woman in sentence 1 could be eating at cafes or park or any other place apart from restaurant.
exists e2 e1 p1 x1 x2 x3 x4 x5 x6.(Actor(e2,x4) & v_eat(e2) & subset_of(x6,x4) & n_woman(x6) & subset_of(x5,x4) & n_man(x5) & exists s1.(Theme(s1,x1) & a_down(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists p1 x1.(exists x2.(at(x1,x2) & n_restaurant(x2)) & n_couple(x1))