A woman is kneeling near lanterns while a little boy plays in the sand.
The boy is building sand castles.
Paying with sand doesn't imply building sand castles.
exists e1 p1 x1 x2 x4.(n_sand(x4) & exists e2 s1 x3.(in(e2,x4) & Actor(e2,x3) & v_play(e2) & n_boy(x3) & a_little(s1) & Theme(s1,x3)) & while(e1,p1) & near(e1,x2) & n_lantern(x2) & Actor(e1,x1) & v_kneel(e1) & n_woman(x1))
exists e1 x1 x2 x3.(n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_castle(x2) & of(x2,x3) & n_sand(x3))