A ballerina in a black leotard leaps through the air.
A dancer has no legs.
Ballerinas cannot dance without legs.
exists e1 s1 x1 x2 x3.(n_air(x3) & through(e1,x3) & Actor(e1,x1) & v_leap(e1) & in(x1,x2) & n_leotard(x2) & a_black(s1) & Theme(s1,x2) & n_ballerina(x1))
exists x1.(-exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_leg(x2)) & n_dancer(x1))