A young man squirts water from a water gun into a dog's mouth.
A man squirts water from a gun into a dogs mouth.
It only makes sense that to squirt water from a gun that it would require the gun to be a water gun.
exists s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & from(x1,x4) & into(x4,x7) & n_mouth(x7) & of(x7,x6) & n_dog(x6) & n_gun(x4) & of(x4,x5) & n_water(x5) & n_water(x1) & of(x1,x3) & n_squirt(x3) & of(x1,x2) & n_man(x2) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4 x5.(from(e1,x3) & into(x3,x4) & n_mouth(x4) & of(x4,x5) & n_dog(x5) & n_gun(x3) & Theme(e1,x2) & Actor(e1,x1) & v_squirt(e1) & n_water(x2) & n_man(x1))