Sierpe River (Spanish: "Rio Sierpe") is a river of Costa Rica. Boat traffic is common with both locals and tourists. A broad range of wildlife can be seen from the American Crocodile, various other reptile species, and exotic fish and birds. It joins the Rio Terraba.
Both the Sierpe River and the Rio Terraba, of Costa Rica, are common with locals and tourists, and feature a broad range of wildlife including exotic fish, birds, and reptiles.
We contextually do not know if the Rio Terraba is popular or what it's wildlife is like, so this is not correct nor wrong.  Combining both rivers and including the other factual information after it must have the AI ignoring the secondary inclusion in its hierarchical consideration.