Two children are climbing stairs which lead to an airplane.
Two children are escorted by a flight attendant as they board a plane.
It is not implied that the children are climbing the stairs to board the airplane, and it is not implied that the children were escorted by a flight attendant.
exists e2 e1 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_climb(e2) & to(e1,x4) & n_airplane(x4) & Actor(e1,x3) & v_lead(e1) & (x2 = x3) & n_stair(x2) & n_child(x1) & card_eq_2(x1))
exists e2 e1 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x1) & v_board(e2) & n_plane(x5) & Actor(e1,x3) & as(x3,x1) & n_thing(x1) & n_attendant(x3) & of(x3,x4) & n_flight(x4) & Theme(e1,x2) & v_escort(e1) & (x1 = x2) & n_child(x1) & card_eq_2(x1))