Some cows cluster together.
Some horses run free
Cows are not horses. Animals that run free are not in a cluster together, but are spread out.
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_cluster(e1) & n_cow(x1))
exists e1 s1 x1.(a_free(s1) & Manner(e1,s1) & Actor(e1,x1) & v_run(e1) & n_horse(x1))