Assertion: sprinkler | /r/HasAspect | proven track record
Facets:
value: in the beginning
type: TEMPORAL
Source sentences:
text: Again, because it is vital that these sprinklers respond faster than standard response sprinklers, and because they do not yet have the history to prove their long-term efficacy, it was determined they needed different testing requirements, especially in the beginning until they had a proven track record.