Teen female enjoys going swimming.
Boys are swimming in the ocean.
Boys are male and thus they cannot be female.
exists e1 p1 x1 x2.(exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_go(e2) & n_swimming(x3)) & Topic(e1,p1) & Actor(e1,x1) & v_enjoy(e1) & n_female(x1) & (x1 = x2) & ne_nam_teen(x2))
exists e1 x1 x2.(n_ocean(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_boy(x1))