Man is crosscountry cycling in the forest.
A woman riding a horse in the forest.
The subject cannot be a man and a woman, it must be one or the other.
exists p1 x1 x2.(n_forest(x2) & in(p1,x2) & exists s1 x3.((x1 = x3) & n_cycling(x3) & a_crosscountry(s1) & Theme(s1,x3)) & n_man(x1))
exists e1 x1 x2 x3 x4.(n_forest(x4) & a_topic(x1) & in(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_horse(x3) & (x1 = x2) & n_woman(x1))