Can someone help me to understand why categories for these two differ?

row #51 "Think of some family rules to promote a healthy family relationship" - brainstorsming [1]

row #68 "What is the future for human?" - general_qa [2]

In nature they both are brainstorming to me - does the question mark is what assigned the #68 as _qa?

[1] https://lite.datasette.io/?json=https://github.com/databrick...

[2] https://lite.datasette.io/?json=https://github.com/databrick...