Dozens of cyclists ride their bikes on a suspension bridge, with no cars visible.
The cyclists don't have to worry about being hit by a car.
No cars visible means they don't have to worry about being hit by a car.
exists e1 x1 x2 x3 x4 x5.(-exists s1 x6 x7.(with(e1,x6) & Theme(s1,x7) & a_visible(s1) & (x6 = x7) & n_car(x6)) & on(e1,x4) & n_bridge(x4) & of(x4,x5) & n_suspension(x5) & Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_bike(x3) & of(x3,x1) & n_thing(x1) & of(x1,x2) & n_cyclist(x2) & n_dozen(x1))
exists x1.(n_cyclist(x1) & -exists e1 p1.(Topic(e1,p1) & Actor(e1,x1) & v_have(e1) & exists e2 e3 x2 x3.(about(e2,e3) & Actor(e3,x3) & n_car(x3) & Theme(e3,x2) & v_hit(e3) & Actor(e2,x1) & v_worry(e2))))