There are young men playing a game of football, one man has been tackled by another player.
A lesson on football is being taught.
We don't know that a lesson is being taught.
exists e1 p1 x1 x2 x3 x4.(n_player(x3) & Actor(e1,x4) & n_player(x4) & -(x4 = x3) & Theme(e1,x2) & v_tackle(e1) & n_man(x2) & card_eq_1(x2) & exists e2 s1 x5 x6 x7 x8.((x1 = x5) & Theme(e2,x7) & Actor(e2,x6) & v_play(e2) & of(x7,x8) & n_football(x8) & n_game(x7) & (x5 = x6) & n_man(x5) & a_young(s1) & Theme(s1,x5)))
exists e1 x1 x2.(Theme(e1,x1) & v_teach(e1) & on(x1,x2) & n_football(x2) & n_lesson(x1))