What is the relationship between 'CBS Corporation' and 'CBS' in the context of the input sentence.
Options: platform, manufacturer, product/material produced, owner of

The site, http://cbspulse.com , is a cross-divisional effort across CBS Corporation being spearheaded by CBS Local Digital Media and features content from across the Company’s world-class editorial organizations including CBS News, CBS Radio, CBS Local, CBS Interactive and Simon & Schuster.
product/material produced