500 until around a.d. 800).
It lasted until 800 AD.
The city didn't exist in 800 AD.
The girl is not wearing glasses.
He observed that in the randomized trials of interventions that used motivational interviewing, we must look at  how skilled the counselors are in comforting patients.
A person is not taking photos.
The two people were climbing the mountain
People are wearing helmets.
The question seems ethnocentric.