Some cows cluster together.
Multiple cows are together
Some cows come together  in multiples as clusters.
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 s1 x1 x2.(Theme(s1,x1) & a_together(s1) & n_cow(x1) & (x1 = x2) & ne_nam_multiple(x2))