A person prays at a shrine.
A person is praying.
prays at a shrine. is inferred as praying
exists e1 x1 x2.(at(e1,x2) & n_shrine(x2) & Actor(e1,x1) & v_pray(e1) & n_person(x1))
exists e1 x1.(Actor(e1,x1) & v_pray(e1) & n_person(x1))