A happy man in a blue collared shirt is typing on his computer.
An office worker types during work.
Typing on his computer does not mean he is an office worker.
exists e1 s1 s2 s3 x1 x2 x3.(on(e1,x3) & n_computer(x3) & of(x3,x1) & n_male(x1) & Actor(e1,x1) & v_type(e1) & in(x1,x2) & n_shirt(x2) & a_collared(s3) & Theme(s3,x2) & a_blue(s2) & Theme(s2,x2) & n_man(x1) & a_happy(s1) & Theme(s1,x1))
exists x1 x2 x3 x4.(a_topic(x1) & during(x1,x4) & n_work(x4) & n_type(x1) & of(x1,x3) & n_worker(x3) & of(x1,x2) & n_office(x2))