A skateboarder in the air at a big, outdoor ramp.
the frog eats pigs
A skateboarder and a frog are not the same.
exists s1 s2 s3 x1 x2 x3.(n_air(x2) & a_topic(x1) & in(x1,x2) & at(x2,x3) & n_ramp(x3) & a_outdoor(s3) & Theme(s3,x3) & a_,(s2) & Theme(s2,x3) & a_big(s1) & Theme(s1,x3) & n_skateboarder(x1))
exists e1 x1 x2.(n_frog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_pig(x2))