Man on bike using boxing glove on a stick.
A man is practicing boxing in a gym.
The man was on a bike, while practicing boxing it is not done while on a bike and we can not assume he was at the gym.
exists e1 e2 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_use(e2) & on(x4,x5) & n_stick(x5) & n_glove(x4) & Actor(e1,x4) & v_box(e1) & (x2 = x3) & n_bike(x2) & n_man(x1))
exists e1 p1 x1.(exists e2 x2.(in(e2,x2) & n_gym(x2) & Actor(e2,x1) & v_box(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_practice(e1) & n_man(x1))