Would Donald Duck be allowed into most grocery stores?
Donald Duck is known for not wearing any pants or shoes. Most grocery stores have a "No shoes, No Shirt, No Service" policy.
The answer is no.

Was the death of Heath Ledger caused by his work on The Dark Knight?
Heath Ledger accidentally overdosed on prescription medication. Heath Ledger's overdose led to his death.
The answer is no.

Do manta rays live in water above the safe temperature for cold food storage?
For cold foods, the food safe temperature is 40 degrees Fahrenheit and below. Manta rays prefer water temperatures above 68 °F (20 °C).
The answer is yes.

Could George Washington's own speeches have been recorded live to a compact disc?
George Washington died in 1799. CDs weren't invented until 1982.
The answer is no.