The conversation between human and AI assistant.
[|Human|] categorize some popular sports as either 'safe', 'not so safe' or 'dangerous'.
[|AI|] safe: pingpong, golf, chess, curling, cross county skiing, archery
not so safe: soccer, basketball, bicycling, baseball, tenniss
dangerous: skiing, surfing, American Football, race car driving, sky diving
[|Human|] 
categorize some popular sports as either 'safe', 'not so safe' or 'dangerous'.