A motorcyclist drives up the side of a green mountain while another bike remains stationary.
A bicycle is cruising the streets.
While motorcycles and bicycles are similar, they are not the same. The bicycle lacks a motor.
exists e1 p1 s1 s2 x1 x2 x3 x4.(n_bike(x4) & n_side(x2) & exists e2 p2 x5.(exists s3.(Theme(s3,x5) & a_stationary(s3)) & Topic(e2,p2) & Actor(e2,x5) & v_remain(e2) & n_bike(x5) & -(x5 = x4)) & while(e1,p1) & a_up(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & of(x2,x3) & n_mountain(x3) & a_green(s1) & Theme(s1,x3) & n_motorcyclist(x1))
exists e1 x1 x2.(n_street(x2) & Theme(e1,x2) & Actor(e1,x1) & v_cruise(e1) & n_bicycle(x1))