A young child wearing a striped bathing suit sits on the sand.
The child is building a sandcastle.
Sitting in the sand is not necessarily mean that you're building a sandcastle.
exists e2 e1 s1 s2 x1 x2 x3 x4 x5.(n_sand(x5) & on(e2,x5) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_suit(x3) & of(x3,x4) & n_bathing(x4) & a_striped(s2) & Theme(s2,x3) & (x1 = x2) & n_child(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_child(x1) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_sandcastle(x2))