A child in red is riding a bicycle.
The child is happy riding his bike.
A child is usually happy riding a bicycle; bike is a shorter version of bicycle.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_bicycle(x3) & in(x1,x2) & n_red(x2) & n_child(x1))
exists e1 s1 x1 x2.(n_bike(x2) & of(x2,x1) & n_male(x1) & n_child(x1) & for(s1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & Theme(s1,x1) & a_happy(s1))