Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: Who won the challenge where the Roosters played St. Helens? Passage:Cayless started his career in the National Rugby League with the Parramatta Eels alongside his older brother, Nathan Cayless, who had already been with the club for three years. In 2001 he made his representative début for New South Wales Country Origin. The following year Cayless moved to the Sydney Roosters and played for them at prop forward in their 2002 NRL Grand Final win over the New Zealand Warriors. Having won the 2002 NRL Premiership, the Roosters traveled to England to play the 2003 World Club Challenge against Super League champions, St. Helens. Cayless played at prop forward in Sydney's victory. He made his international début for New Zealand in 2002 and went on to play in ten Test matches for New Zealand. He played at prop for the Sydney Roosters in the 2003 NRL grand final which was lost to the Penrith Panthers.


a