A dog performs acrobatic stunts on a platform.
The dog does not know any acrobatic stunts.
A dog cannot perform acrobatic stunts if it does not know any acrobatic stunts.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_platform(x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_stunt(x2) & a_acrobatic(s1) & Theme(s1,x2) & n_dog(x1))
exists x1.(n_dog(x1) & -all s1 x2.((n_stunt(x2) & a_acrobatic(s1) & Theme(s1,x2)) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_know(e1))))