A man is sitting in front of a computer monitor holding a keyboard and looking at the camera.
The computer is on.
The man doesn't necessarily have to be using the computer.
exists e1 e3 e2 x1 x2 x3 x4 x5 x6.(n_camera(x6) & for(e1,e3) & at(e3,x6) & Actor(e3,x1) & v_look(e3) & for(e1,e2) & Theme(e2,x5) & Actor(e2,x1) & v_hold(e2) & n_keyboard(x5) & in(e1,x2) & of(x2,x3) & n_monitor(x3) & of(x3,x4) & n_computer(x4) & n_front(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists s1 x1.(n_computer(x1) & Theme(s1,x1) & a_on(s1))