A crowded commercial area in the evening.
there is a big sale
Just because there's a crowded commercial area doesn't necessarily mean there's a sale
exists s1 s2 x1 x2.(n_evening(x2) & a_topic(x1) & in(x1,x2) & n_area(x1) & a_commercial(s2) & Theme(s2,x1) & a_crowded(s1) & Theme(s1,x1))
exists p1 x1 s1 x2.((x1 = x2) & n_sale(x2) & a_big(s1) & Theme(s1,x2))