Three teenagers are carrying wood down a street while one of the teenagers is smiling at the camera.
Teenagers gather wood to carry back to their house to keep warm.
The first sentence doesn't say anything about gathering the wood or where they are taking it and what they are using it for, it might not be to keep warm.
exists e1 p1 x1 x2 x3 x5.(n_camera(x5) & exists e2 x4.(at(e2,x5) & Actor(e2,x4) & v_smile(e2) & of(x4,x1) & n_thing(x4) & card_eq_1(x4)) & n_teenager(x1) & n_teenager(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & down(x2,x3) & n_street(x3) & n_wood(x2) & card_eq_3(x1))
exists e1 p1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_gather(e1) & Topic(x2,p1) & exists e2 p2.(Topic(e2,p2) & exists e3 p3.(exists s1.(Theme(s1,x2) & a_warm(s1)) & Topic(e3,p3) & Actor(e3,x2) & v_keep(e3)) & to(e2,x3) & r_back(e2) & Actor(e2,x2) & v_carry(e2)) & n_house(x3) & of(x3,x1) & n_thing(x1) & n_wood(x2) & n_teenager(x1))