A man wearing a white cap is taking a photo
The man taking a photo is a sailor.
The man taking a photo need not be a sailor.
exists e1 e2 s1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_take(e2) & n_photo(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_cap(x3) & a_white(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 p1 x1 x2 x3.(n_man(x1) & exists x4.((x1 = x4) & n_sailor(x4)) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_photo(x3) & (x1 = x2))