A group of men playing basketball on an outdoor court.
The men have been playing basketball for an hour.
how do they know how long they been playing for
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & on(e1,x5) & n_court(x5) & a_outdoor(s1) & Theme(s1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_basketball(x4) & (x2 = x3) & n_man(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_man(x1) & for(e1,x3) & n_hour(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_basketball(x2))