Assertion: fortress's wall | /r/HasAspect | a height of 12–15 metres
Facets:
value: with 188 towers
type: OTHER
value: with thirteen gates
type: OTHER
Source sentences:
text: The wall of the Propontis was built almost at the shoreline, with the exception of harbours and quays, and had a height of 12–15 metres, with thirteen gates, and 188 towers.