A man loading rocks into a wheelbarrow.
A man loads dirt into a truck.
They are either loading rocks or dirt. It is either a wheelbarrow or a truck.
exists e1 x1 x2 x3 x4.(a_topic(x1) & into(e1,x4) & n_wheelbarrow(x4) & Theme(e1,x3) & Actor(e1,x2) & v_load(e1) & n_rock(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(into(e1,x3) & n_truck(x3) & Theme(e1,x2) & Actor(e1,x1) & v_load(e1) & n_dirt(x2) & n_man(x1))