Muslims riding their bicycles down a busy street.
The Muslims are riding skateboards on the beach.
Bicycles and skateboards are two different vehicles
exists e1 s1 s2 x1 x2 x3.(ne_nam_muslims(s1) & a_topic(s1) & down(e1,x2) & n_street(x2) & a_busy(s2) & Theme(s2,x2) & Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_bicycle(x3) & of(x3,x2) & n_thing(x2) & (s1 = x1))
exists e1 x1 x2 x3.(n_beach(x3) & ne_nam_muslims(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_skateboard(x2))