Assertion: stallion's mare | /r/HasProperty | difficult to manage
Facets:
value: until the invention of castration
type: TEMPORAL
Source sentences:
text: In addition, some mares become anxious when separated from their foals, even temporarily, and thus are difficult to manage under saddle until their foals are weaned.
text: Until the invention of castration, and even later where there was less cultural acceptance of castration, mares were less difficult to manage than stallions and thus preferred for most ordinary work.