Two people performing karate, one kicking a block of wood while the other holds it.
Two people are practicing karate.
Just because two people are performing karate, does not men the people are practicing.
exists e1 e2 p1 x1 x2 x3 x4 x5 x6 x7 x8.(n_other(x8) & a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_perform(e2) & rel(x3,x4) & exists e3.(Theme(e3,x1) & Actor(e3,x8) & v_hold(e3)) & n_thing(x1) & while(e1,p1) & Theme(e1,x6) & Actor(e1,x5) & v_kick(e1) & of(x6,x7) & n_wood(x7) & n_block(x6) & (x4 = x5) & n_thing(x4) & card_eq_1(x4) & n_karate(x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_practice(e1) & n_karate(x2) & n_people(x1) & card_eq_2(x1))