Adults and children are taking a bike ride on a quiet road.
Humans riding.
Humans riding is the same as adults and children riding.
exists e1 s1 x1 x2 x3 x4 x5 x6.(Theme(e1,x4) & Actor(e1,x1) & v_take(e1) & on(x4,x6) & n_road(x6) & a_quiet(s1) & Theme(s1,x6) & n_ride(x4) & of(x4,x5) & n_bike(x5) & n_child(x3) & n_adult(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists s1 x1 x2.(n_riding(x1) & a_.(s1) & Theme(s1,x1) & (x1 = x2) & ne_nam_humans(x2) & a_topic(x1))