A young child with a red belt does a demonstration.
The child has a belt.
If the child has a belt, this indicates that the child is with a belt.
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_demonstration(x3) & with(x1,x2) & n_belt(x2) & a_red(s2) & Theme(s2,x2) & n_child(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_child(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_belt(x2))