Group of cyclists in riding gear with helmets.
Group of people on bikes
People on bikes are also called cyclists.
exists s1 x1 x2 x3 x4.(ne_org_group(s1) & a_topic(s1) & in(s1,x2) & with(x2,x4) & n_helmet(x4) & n_gear(x2) & of(x2,x3) & n_riding(x3) & of(s1,x1) & n_cyclist(x1))
exists s1 x1 x2.(ne_org_group(s1) & a_topic(s1) & of(s1,x1) & on(x1,x2) & n_bike(x2) & n_people(x1))