A person skiing down a hill.
A puppy is sitting.
A person skiing has nothing to do with a puppy sitting.
exists x1 x2 x3.(a_topic(x1) & down(x1,x3) & n_hill(x3) & Time(x1,x2) & n_skiing(x2) & n_person(x1))
exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_puppy(x1))