A group of bikers pedal along.
A group of cyclists.
Cyclists is another word for pedal bikers.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & Theme(s2,x4) & a_along(s2) & (x1 = x4) & of(x1,x2) & Theme(s1,x3) & a_pedal(s1) & (x2 = x3) & n_biker(x2) & n_group(x1))
exists x1 x2.(a_topic(x1) & of(x1,x2) & n_cyclist(x2) & n_group(x1))