Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ancient City of Aleppo' has mentioned 'Earthquake' in the following places:
Occurrence Sentence Text Source
On 9 August 1138 CE, a deadly earthquake ravaged the city and the surrounding area.
Although estimates from this time are very unreliable, it is believed that 230,000 people died, making it the fifth deadliest earthquake in recorded history.