A group of people wearing blue and white dishdashas all riding orange bicycles.
A group of people are riding orange bicycles.
The people riding imply that they are riding.  In both cases, the bicycles are orange
exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5.(a_all(s3) & Manner(e2,s3) & Theme(e2,x4) & Actor(e2,x3) & v_ride(e2) & n_bicycle(x4) & of(x4,x5) & n_orange(x5) & n_dishdasha(x3) & a_white(s2) & Theme(s2,x3) & a_blue(s1) & Manner(e1,s1) & Actor(e1,x1) & v_wear(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_bicycle(x3) & of(x3,x4) & n_orange(x4) & of(x1,x2) & n_people(x2) & n_group(x1))