A woman is at a gym exercising on a treadmill.
A man is at a gym exercising on a stationary bike.
A woman and a man are different genders, and a treadmill and stationary bike are different pieces of exercise equipment.
exists p1 x1.(exists e1 x2 x3 x4.(at(x1,x2) & on(e1,x4) & n_treadmill(x4) & Actor(e1,x3) & v_exercise(e1) & (x2 = x3) & n_gym(x2)) & n_woman(x1))
exists p1 x1.(exists e1 s1 x2 x3 x4.(at(x1,x2) & on(e1,x4) & n_bike(x4) & a_stationary(s1) & Theme(s1,x4) & Actor(e1,x3) & v_exercise(e1) & (x2 = x3) & n_gym(x2)) & n_man(x1))