Step-by-step reasoning process: The saltwater crocodile is listed as "least concern" on the International Union for the Conservation of Nature Red List. The European otter is listed as "near threatened" on the International Union for the Conservation of Nature Red List. The International Union for the Conservation of Nature Red List starts with "least concern", then "near threatened", "vulnerable", "endangered", "critically endangered", "extinct in the wild", and "extinct".
[Q and A]: Is the saltwater crocodile less endangered than the European otter?
yes

Step-by-step reasoning process: 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.
[Q and A]: Do you have to put on glasses to read a QR code?
no

Step-by-step reasoning process: The post office has several holidays including: New Year's Day, Washington's Birthday (President's Day), and Veterans Day. George Washington was the only US president elected unanimously.
[Q and A]:
Is unanimously elected president's birthday a break for mail carriers?
yes