Two little children are walking up some steps to get into an airplane.
Two children will be joining their parents in the plane.
It is not implied that the parents are on the plane, or that the children will be joining them.
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_plane(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_join(e1) & n_parent(x2) & of(x2,x1) & n_thing(x1) & n_child(x1) & card_eq_2(x1))