A woman carrying a tube descends a flight of stairs.
There is a person with a manmade object who is walking down stairs.
A woman is a person and when walking and descends are interchangeable when going down stairs.
exists e1 e2 x1 x2 x3 x4 x5.(Theme(e2,x4) & Actor(e2,x1) & v_descend(e2) & of(x4,x5) & n_stair(x5) & n_flight(x4) & Theme(e1,x3) & Actor(e1,x2) & v_carry(e1) & n_tube(x3) & (x1 = x2) & n_woman(x1))
exists p1 x1 e1 s1 s2 x2 x3 x4 x5.((x1 = x2) & with(x2,x3) & a_down(s2) & Manner(e1,s2) & Theme(e1,x5) & Actor(e1,x4) & v_walk(e1) & n_stair(x5) & (x3 = x4) & n_object(x3) & a_manmade(s1) & Theme(s1,x3) & n_person(x2))