Teen female enjoys going swimming.
Teens are swimming in a lake.
Not everyone swimming is swimming in a lake.
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.(in(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_swim(e1) & n_teens(x1))