A group of swimmers are holding on to a rope at the beach
A group of swimmers are on the beach.
You cannot be holding on to a rope while being on the beach.
exists e1 x1 x2 x3 x4.(n_beach(x4) & at(e1,x4) & r_on(e1) & to(e1,x3) & n_rope(x3) & Actor(e1,x1) & v_hold(e1) & of(x1,x2) & n_swimmer(x2) & n_group(x1))
exists p1 x1 x2 x3.(n_beach(x3) & on(x1,x3) & of(x1,x2) & n_swimmer(x2) & n_group(x1))