Q: At a presentation about post traumatic stress disorder, would Ariana Grande be a topic of relevance?
A: Ariana Grande was performing in Manchester in 2017 when explosives were set off in an act of terrorism. Ariana Grande has spoken openly about her trauma experience and her PTSD regarding the Manchester Bombing.
The answer is yes.

Q: Were Walkman's used in the Kingdom of Hungary?
A: The Kingdom of Hungary ended in 1946. The Walkman was invented in 1979.
The answer is no.

Q: Is the Federal Reserve a quick walk from Space Needle?
A: The Federal Reserve building is headquartered in Washington, D.C. The Space Needle is located in Seattle, Washington. There are over 2700 miles from Seattle, Washington to Washington, D.C.
The answer is no.

Q: Can someone sell their time through the Toronto Star?
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The Toronto Star has a classifieds section. Readers can advertise their own labor or services and thus their time.
The answer is yes.