A group of people stand watching something ahead.
A group of people are swimming.
They are either swimming or they stand watching.
exists e1 p1 x1 x2.(exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & r_ahead(x3) & n_thing(x3)) & Topic(e1,p1) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_swim(e1) & of(x1,x2) & n_people(x2) & n_group(x1))