Problem: Is there any way to hack facebook account?
How can we hack fb?
Answer: yes

Problem: What causes dry heaving and diarrhea in dogs?
What causes dry heaving in dogs?
Answer: no

Problem: How can I study more hard?
How can I improve my study efficiency?
Answer: yes

Problem: Which country do you think the Diaoyu / Senkaku Islands belong to: China or Japan?
Does Diaoyu Island belong to China or Japan?
Answer:
yes