user: What are the primary caused of fever?

assistant: Primary causes may include:
1. An infection
2. Certain medications
3. Heat illness
4. Cancers
5. Autoimmune diseases
6. Some immunizations like Rabies vaccine.

user: Given the reference text about the history of the Olympic marathon distance, tell me what was the distance of the Olympic marathon during the 1924 Olympics in Paris in kilometers?

assistant: The distance of the Olympic marathon in 1924 would have been 42.195 kilometers, since this is the standard distance set by the IAAF in 1921.

user: What are the names of the lines on Hong Kong's MTR network?

assistant: - Island Line
- Tsuen Wan Line
- Kwun Tong Line
- South Island Line
- Tseung Kwan O Line
- Tung Chung Line & Disneyland Resort Line
- East Rail Line
- Tuen Ma Line
- Airport Express