Claim: The Miami Marlins are a part of a pro sports organization.
Evidence: The Marlins compete in Major League Baseball -LRB- MLB -RRB- as a member of the National League -LRB- NL -RRB- East division.
Major League Baseball -LRB- MLB -RRB- is a professional baseball organization , the oldest of the four major professional sports leagues in the United States and Canada.