A photographer in a white shirt with a professional camera taking a picture.
A photographer is working.
If the photographer is using his professional camera and taking a picture, he is working.
exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & with(x2,x3) & Theme(e1,x5) & Actor(e1,x4) & v_take(e1) & n_picture(x5) & (x3 = x4) & n_camera(x3) & a_professional(s2) & Theme(s2,x3) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_photographer(x1))
exists e1 x1.(Actor(e1,x1) & v_work(e1) & n_photographer(x1))