An older man and woman exercise on treadmills.
Exercising on treadmills.
If you exercise then you are exercising.
exists s1 s2 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & on(x2,x4) & n_treadmill(x4) & n_exercise(x2) & of(x2,x3) & n_woman(x3) & subset_of(x1,s1) & n_man(x1) & r_more(s2) & a_older(s2) & Theme(s2,x1))
exists e1 x1 x2.(on(e1,x2) & n_treadmill(x2) & Actor(e1,x1) & v_exercise(e1) & n_thing(x1))