Several people stand with water pails.
There is no fire.
There is no need for water pails if there is no fire.
exists e1 s1 x1 x2 x3.(with(e1,x2) & n_pail(x2) & of(x2,x3) & n_water(x3) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists p1 x1.-exists x2.((x1 = x2) & n_fire(x2))