Assertion: firefly's light | /r/HasProperty | metaphor
Facets:
value: since man’you-shu
type: TEMPORAL
value: for passionate love in poetry
type: CAUSE
Source sentences:
text: She wrote that the firefly’s mystical light has been a metaphor for passionate love in poetry since Man’you-shu (the 8thcentury anthology-which is the oldest collection of poetry in Japan).