A man holds an object with his hand while riding his bike down the street.
a man walking down the street
You cannot be riding a bike and walking at the same time.
exists e2 e1 x1 x2 x3 x4 x5.(n_street(x5) & while(e1,e2) & down(e2,x5) & Theme(e2,x4) & Actor(e2,x1) & v_ride(e2) & n_bike(x4) & of(x4,x1) & n_male(x1) & n_male(x1) & with(e1,x3) & n_hand(x3) & of(x3,x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_object(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_street(x3) & a_topic(x1) & down(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_man(x1))