A boy flips off a diving board into a pool.
The boy knows how to swim.
To flip off a diving board is implied as one knows how to swim.
exists e1 e2 s1 x1 x2 x3.(into(e2,x3) & n_pool(x3) & a_off(s1) & Manner(e2,s1) & Theme(e2,x2) & Actor(e2,x1) & v_flip(e2) & n_board(x2) & Actor(e1,x2) & v_dive(e1) & n_boy(x1))
exists e1 x1 x2.(n_boy(x1) & Topic(e1,x2) & Actor(e1,x1) & v_know(e1) & n_manner(x2) & exists e2 x3.(Actor(e2,x3) & v_swim(e2)))