Three children are practicing karate.
A few kids practice martial arts.
Three means a few and kids is a synonym for children.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_practice(e1) & n_karate(x2) & n_child(x1) & card_eq_3(x1))
exists s1 x1 x2 x3.(a_topic(x1) & n_martial(x1) & Time(x1,x3) & n_art(x3) & n_practice(x1) & of(x1,x2) & n_kid(x2) & a_few(s1) & Theme(s1,x1))