The boy is sitting outside wearing red clothing.
A boy is riding a bike.
sitting refers to being stationary, riding refers to being mobile.
exists e1 e2 s1 x1 x2.(n_boy(x1) & outside(e1,x2) & n_clothing(x2) & a_red(s1) & Theme(s1,x2) & Actor(e2,x2) & v_wear(e2) & Actor(e1,x1) & v_sit(e1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_boy(x1))