An elderly gentleman riding a bike.
An older man is on a bicycle.
elderly gentleman implies older man.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bike(x3) & (x1 = x2) & n_gentleman(x1) & a_elderly(s1) & Theme(s1,x1))
exists p1 s1 x1.(exists x2.(on(x1,x2) & n_bicycle(x2)) & n_man(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))