Children resting and walking up many steps.
The children are out of breath.
Resting does not imply being out of breath.
exists e2 e1 s1 x1 x2 x3.(ne_nam_children(x1) & a_up(s1) & Manner(e2,s1) & Theme(e2,x3) & Actor(e2,x1) & v_walk(e2) & n_step(x3) & n_quantity(x3) & Theme(e1,x2) & Actor(e1,x1) & v_rest(e1) & n_step(x2) & n_quantity(x2))
exists p1 x1.(n_child(x1) & exists x2.(r_out(x1) & of(x1,x2) & n_breath(x2)))