People sitting at and walking around out front of a sweets cafe.
No people are in front of the cafe
There cannot be no people if people are sitting at and walking around the front of the cafe.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & r_around(e1) & out(e1,x4) & of(x4,x5) & n_cafe(x5) & of(x5,x6) & n_sweet(x6) & n_front(x4) & at(e1,x3) & n_walk(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists x3.(n_cafe(x3) & -exists p1 x1.(exists x2.(in(x1,x2) & of(x2,x3) & n_front(x2)) & n_people(x1)))