Assertion: caster's mother | /r/CapableOf | succumb to both zeus
Facets:
value: of their sister
type: OTHER
value: on the same night
type: TEMPORAL
Source sentences:
text: Their conception and birth, however, was a complicated and unlikely affair, with their mother succumbing to both Zeus (disguised as a swan) and King Tyndareus on the same night, with the resulting birth not only of Castor and Pollux, but of their sister Helen of Troy.