A ballerina poses outside.
A football player is posing
A ballerina is different than a football player.
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_outside(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_pose(e1) & n_ballerina(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_pose(e1) & n_player(x1) & of(x1,x2) & n_football(x2))