A bicyclist does maneuvers
The person on the bike is wearing elbow pads.
Not everyone on a bike is wearing elbow pads.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_maneuver(x2) & n_bicyclist(x1))
exists e1 x1 x2 x3 x4.(n_bike(x2) & n_person(x1) & Theme(e1,x3) & Actor(e1,x1) & v_wear(e1) & n_pad(x3) & of(x3,x4) & n_elbow(x4) & on(x1,x2))