A beaver on the shore of a stream.
Turtles are sunning themselves on a log.
Turtles and beavers are different animals.
exists x1 x2 x3.(n_shore(x2) & a_topic(x1) & on(x1,x2) & of(x2,x3) & n_stream(x3) & n_beaver(x1))
exists e1 x1 x2 x3.(n_group(x2) & on(e1,x3) & n_log(x3) & Theme(e1,x2) & Actor(e1,x1) & v_sun(e1) & n_turtle(x1))