A man and a woman are biking on a sunny day.
A man and woman ride bikes.
If people ride bikes, they are said to be biking.
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_day(x4) & a_sunny(s1) & Theme(s1,x4) & Actor(e1,x1) & v_bike(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & n_bike(x2) & of(x2,x4) & n_ride(x4) & of(x2,x3) & n_woman(x3) & subset_of(x1,s1) & n_man(x1))