Does the following sentence make sense?
"Current research has found that Quartz crystals have a proven healing ability that has no scientific explanation."
Options:
- yes
- no
no
No crystals of any kind have ever passed the double blind test for healing or anything supernatural.

Is the following a factual statement?
"The latest version of IOS is released."
Options:
- yes
- no
yes
IOS is a mobile operating system that upgrades its versions.

Is the following statement true?
"Hamburgers are not popular in the USA."
no
Hardly any eating establishment serves them in the USA.

Is the following a factual statement?
"It is a mandatory tradition to give someone a gift on Christmas Eve."
Options:
- yes
- no
no
It is not mandatory to celebratr Christmas Eve in any specific way.