People walking in the rain.
People sledding down the snowy hill.
Sledding is different than walking.
exists e1 x1 x2 x3.(n_rain(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))
exists e1 s1 x1 x2 x3.(n_hill(x3) & a_snowy(s1) & Theme(s1,x3) & a_topic(x1) & down(e1,x3) & Actor(e1,x2) & v_sled(e1) & (x1 = x2) & n_people(x1))