Yes / no, is the following a verifiable fact?
"Drums purify water using an advanced filtration system."

Let me think out loud. Drums are musical instruments, not water purification devices. The answer is no.

"Narayana Guru led a reform movement against the injustice in the caste-ridden society of Kerala in order to promote spiritual enlightenment and social equality."
Is the above claim true?
Options:
- yes
- no

Let me think out loud. The sentence is true because there are records of his work that prove it. The answer is yes.

Is the following statement true?
"Lil Wayne produces songs that are great for dancing to."
Let me think out loud. Rap music usually emphasizes the beat and is great for dancing to. The answer is yes.