A crowd of people are in a cafe.
People are at a mall.
A CAFE IS NOT A MALL
exists p1 x1 x2.(exists x3.(in(x1,x3) & n_cafe(x3)) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists p1 x1.(exists x2.(at(x1,x2) & n_mall(x2)) & n_people(x1))