Assertion: apple tree's apple | /r/HasProperty | travelled to europe
Facets:
value: with introgression
type: CAUSE
value: along the silk road
type: LOCATION
Source sentences:
text: The apple is thought to have been domesticated 4000-10000 years ago in the Tian Shan Mountains, and then to have travelled along the Silk Road to Europe, with hybridization and introgression of wild crabapples from Siberia (M. baccata (L.) Borkh.)