a boy squirts a squirt gun.
A boy shoots a super soaker gun.
There are many types of squirt guns, any one of which the boy could be using instead of a super soaker gun.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_squirt(e1) & n_gun(x2) & of(x2,x3) & n_squirt(x3) & n_boy(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_shoot(e1) & n_gun(x2) & of(x2,x4) & n_soaker(x4) & of(x2,x3) & n_super(x3) & n_boy(x1))