Simplify the following text for a Grade 9 native English-speaking person.
Original: The Port Arthur Bearcats ( also known as the Bear Cats ) were an amateur men 's senior ice hockey team based in Port Arthur , Ontario ( now part of the city of Thunder Bay ) .
Simplified: The Port Arthur Bearcats were an amateur men 's senior ice hockey team based in Port Arthur , Ontario , now part of the city of Thunder Bay .