A boy in a swimsuit walking in the sand towards the water
A boy in a swimsuit not walking
A boy is walking so not walking is not possible.
exists x1 x2 x3 x4 x5.(n_water(x5) & n_sand(x4) & a_topic(x1) & in(x1,x2) & towards(x2,x5) & in(x2,x4) & n_walking(x2) & of(x2,x3) & n_swimsuit(x3) & n_boy(x1))
exists x1 x2 x3.(a_topic(x1) & in(x1,x2) & -exists e1.(Actor(e1,x3) & v_walk(e1)) & (x2 = x3) & n_swimsuit(x2) & n_boy(x1))