Question: Are Saturn's famous rings solid?
Answer: The rings are made mostly of dust and particles. The ring matter is constantly in orbital motion around Saturn.. The answer is: no.

Question: Do you have to put on glasses to read a QR code?
Answer: Glasses are used to improve one's vision capabilities. QR codes are not readable by humans and have to be read by machines or programs.. The answer is: no.

Question: Did Native American tribes teach Spaniards how to cultivate maize?
Answer:
In 1492, Spanish settlers brought Maize back to Europe from America. Native Americans cultivated and bred the first maize from wild grasses.. The answer is: yes.