A group of people wearing jackets are gathered on the sidewalk.
The people are swimming in the ocean.
on the sidewalk is contradictory to in the ocean
exists e2 e1 x1 x2 x3 x4 x5.(n_sidewalk(x5) & on(e2,x5) & Theme(e2,x1) & v_gather(e2) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_jacket(x4) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_ocean(x2) & n_people(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))