Assertion: pigeon's use | /r/HasAspect | strapped capsules
Facets:
value: in 1150 a.d.
type: TEMPORAL
Source sentences:
text: It is believed that the use of carrier pigeons as a messenger service had it origins in antiquity – in 1150 A.D., the Sultan of Baghdad strapped capsules filled with papyrus sheets to the leg or back feathers of pigeons, and used them as messengers.