Man on bike in mountains
A human on bike
The creature on the bike is a human because he is a man.
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & in(x2,x3) & n_mountain(x3) & n_bike(x2) & n_man(x1))
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_bike(x2) & n_human(x1))