A man in a checkered apron cleans a desk.
A cleaning task is being accomplished.
"Cleans a desk" implies that cleaning is being accomplished.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_clean(e1) & n_desk(x3) & in(x1,x2) & n_apron(x2) & a_checkered(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x1) & v_accomplish(e1) & n_task(x1) & of(x1,x2) & n_cleaning(x2))