Yes / no, is the following a verifiable fact?
"Frankenstein sang “I Did It My Way” and many other popular songs."

Let me think out loud. Frank Sinatra performed many popular songs but Frankenstein never sang anything. The answer is no.

Yes / no, is the following a verifiable fact?
"At the end of the Rainbow there's a pot of weed for all."

Let me think out loud. A rainbow is a symbol of luck in some cultures. The answer is no.

Is the following sentence factually correct?
"Burning coal has been the most effective for of Energy storage."
Options:
- yes
- no
Let me think out loud. Burning coal is one of the most wasteful energy processes. The answer is no.