Assertion: dragonfly's insect | /r/HasProperty | known for their short life spans
Facets:
value: extremely
type: DEGREE
value: in large numbers
type: OTHER
value: in the summer months
type: TEMPORAL
Source sentences:
text: Mayfly , (order Ephemeroptera), any member of a group of insects known for their extremely short life spans and emergence in large numbers in the summer months.