A woman and a man eating at a cafe.
A woman and a man are on a lunch date.
Just because a  woman and a man eating at a cafe doesn't mean they are on a lunch date
exists s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & at(x2,x4) & n_cafe(x4) & n_eating(x2) & of(x2,x3) & n_man(x3) & subset_of(x1,s1) & n_woman(x1))
exists p1 x1 x2 x3.(exists x4 x5.(on(x1,x4) & n_date(x4) & of(x4,x5) & n_lunch(x5)) & subset_of(x3,x1) & n_man(x3) & subset_of(x2,x1) & n_woman(x2))