A large flock of pigeons is swarming at a man.
A flock of pigeons is swarming far from any humans.
The pigeons can't be swarming far from any humans if they are swarming at a man.
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_man(x3) & Actor(e1,x1) & v_swarm(e1) & of(x1,x2) & n_pigeon(x2) & n_flock(x1) & a_large(s1) & Theme(s1,x1))
exists e1 p1 x1 x2.(exists s1.(all x3.(n_human(x3) -> from(s1,x3)) & Theme(s1,x1) & a_far(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_swarm(e1) & of(x1,x2) & n_pigeon(x2) & n_flock(x1))