A man rides his mountain bike with mountains in the background.
A man is riding his bike.
' rides his mountain bike ' is a rephrasing of ' riding his bike.'
exists e1 x1 x2 x3 x4.(n_background(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & with(x2,x3) & in(x3,x4) & n_mountain(x3) & n_mountain(x3) & n_bike(x2) & of(x2,x3) & of(x2,x1) & n_male(x1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_man(x1))