A man locking his bicycle to a metal pole.
A man left his bike unlocked while going to buy cake.
A man locked his bicycle to a metal pole.  Afterward he left his bike unlocked while going to buy cake.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & to(e1,x4) & n_pole(x4) & of(x4,x5) & n_metal(x5) & Theme(e1,x3) & Actor(e1,x2) & v_lock(e1) & n_bicycle(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_man(x1))
exists e1 e3 e2 p1 x1 x2 x3.(while(e2,e3) & Topic(e3,p1) & Actor(e3,x1) & v_go(e3) & exists e4 x4.(Theme(e4,x4) & Actor(e4,x1) & v_buy(e4) & n_cake(x4)) & Actor(e2,x1) & v_unlock(e2) & Theme(e1,x3) & Actor(e1,x2) & v_leave(e1) & n_bike(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_man(x1))