Uniformed people and passersby are walking on a street.
The uniformed people are swimming in chocolate.
swimming is something you do in liquid, walking is something you do on the ground. the street is not usually full of a chocolate river to swim in
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_street(x4) & Actor(e1,x1) & v_walk(e1) & n_passersby(x3) & n_people(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_uniformed(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_people(x1) & a_uniformed(s1) & Theme(s1,x1) & in(e1,x2) & n_chocolate(x2) & Actor(e1,x1) & v_swim(e1))