A man stands on the front wheel of his bicycle, doing a trick.
A man has been riding bikes all day.
A man who stands on the front wheel of his bicycle is not necessarily riding bikes all day.
exists e2 e1 s1 x1 x2 x3 x4.(n_bicycle(x3) & of(x3,x2) & n_male(x2) & n_wheel(x2) & a_front(s1) & Theme(s1,x2) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_do(e2) & n_trick(x4) & on(e1,x2) & of(x2,x3) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
all x1.(n_day(x1) -> exists e1 x2 x3.(Time(e1,x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bike(x3) & n_man(x2)))