Where do WNBA lines usually originate?

[RonPaul2008]

I noticed one place has lines before Pinnacle or Bookmaker, but i'm positive that place is not making the lines.
Where do the first lines come from?

[JoJo5473]

waiting for a good answer too.

[Conqueror]

Why can't anyone supply an answer?

[pinchegringo]

When 2 teams are close to being ready to play the storks deliver the lines to the bookies.