Old man riding a bike down the street.
The bike is larger than a truck.
There can either be an old man or a bike.
exists e1 s1 x1 x2 x3 x4.(n_street(x4) & a_topic(x1) & down(x1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bike(x3) & (x1 = x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists s1 x1 x2.(n_bike(x1) & than(s1,x2) & n_truck(x2) & r_more(s1) & Theme(s1,x1) & a_large(s1))