A man wearing a white hard hat is walking in water.
A construction worker wades through a pond.
A man wearing a hard hat is not necessarily a construction worker, and a man walking in water is not necessarily a man who wades and not necessarily through a pond.
exists e2 e1 s1 s2 x1 x2 x3 x4.(in(e2,x4) & n_water(x4) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_hat(x3) & a_hard(s2) & Theme(s2,x3) & a_white(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists x1 x2 x3 x4.(a_topic(x1) & through(x1,x4) & n_pond(x4) & n_wade(x1) & of(x1,x3) & n_worker(x3) & of(x1,x2) & n_construction(x2))