a young boy in jeans and a blue shirt is wearing a blue helmet.
The boy is wearing a blue helmet and riding a bike.
A boy who wears jeans, a blue shirt, and a blue helmet doesn't have to be riding a bike.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5.(Theme(e1,x5) & Actor(e1,x1) & v_wear(e1) & n_helmet(x5) & a_blue(s3) & Theme(s3,x5) & subset_of(x4,x1) & n_shirt(x4) & a_blue(s2) & Theme(s2,x4) & subset_of(x2,x1) & in(x2,x3) & n_jeans(x3) & n_boy(x2) & a_young(s1) & Theme(s1,x2))
exists e2 e1 s1 x1 x2 x3.(n_boy(x1) & Theme(e2,x3) & Actor(e2,x1) & v_ride(e2) & n_bike(x3) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_helmet(x2) & a_blue(s1) & Theme(s1,x2))