A man, wearing a blue shirt and gray pants, working on a florescent light fixture.
An electrician at work.
To know how to work on a florescent light means that the person has the knowledge of an electrician.
exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5.(on(e2,x4) & n_fixture(x4) & of(x4,x5) & n_light(x5) & a_florescent(s3) & Theme(s3,x4) & Actor(e2,x3) & v_work(e2) & n_pants(x3) & a_gray(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists x1 x2.(a_topic(x1) & at(x1,x2) & n_work(x2) & n_electrician(x1))