Two little children are walking up some steps to get into an airplane.
Two children are climbing up the stairs of an airplane
The children who are walking up steps to get into an airplane are climbing the airplane stairs.
exists e1 p1 s1 s2 s3 x1 x2 x3.(Topic(e1,p1) & exists e2 x4.(into(e2,x4) & n_airplane(x4) & Actor(e2,x1) & v_get(e2)) & a_up(s3) & Manner(e1,s3) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_step(x3) & n_child(x2) & a_little(s2) & Theme(s2,x2) & card_eq_2(x2) & n_child(x1) & a_little(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_stair(x2) & up(e1,x2) & of(x2,x3) & n_airplane(x3) & Actor(e1,x1) & v_climb(e1) & n_child(x1) & card_eq_2(x1))