A man rides his bike on one wheel while towing something behind him.
The man on the bike has no legs
You cannot ride a bike on one wheel with no legs.
exists e1 e2 x1 x2 x3 x4.(while(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_tow(e2) & behind(x4,x1) & n_male(x1) & n_male(x1) & n_thing(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & on(x2,x3) & n_wheel(x3) & card_eq_1(x3) & n_bike(x2) & of(x2,x1) & n_man(x1))
exists x1 x2.(n_bike(x2) & n_man(x1) & -exists e1 x3.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_leg(x3)) & on(x1,x2))