An elephant is a very big animal that lives in Africa and Asia. Cairo is a big city in Egypt. Sometimes, people travel with their elephants to different places, kind of like a big pet. One day, somebody brought their elephant to Cairo and it caused a lot of excitement. People were surprised to see such a big animal walking around their city. It's like when your friend brings their pet cat to school and everyone wants to pet it. But elephants are much bigger than cats, so it was really interesting. That's what people mean when they talk about the elephant in Cairo.