A motorcycle cop is driving around, the bike says polbru under police.
A woman falling off a motorcycle.
A woman cannot falling off a motorcycle while driving a motorcycle.
exists e2 e1 s1 x1 x2 x3 x4 x5.(n_bike(x3) & under(e2,x5) & n_police(x5) & Theme(e2,x4) & Actor(e2,x3) & v_say(e2) & n_polbru(x4) & a_around(s1) & Manner(e1,s1) & Actor(e1,x1) & v_drive(e1) & n_cop(x1) & of(x1,x2) & n_motorcycle(x2))
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_off(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_fall(e1) & n_motorcycle(x3) & (x1 = x2) & n_woman(x1))