Assertion: volcano's eruption | /r/CapableOf | continue at diminishing rate
Facets:
value: for 417 days
type: TEMPORAL
value: slowly
type: MANNER
value: until 6 july
type: TEMPORAL
Source sentences:
text: The eruption continued at a slowly diminishing rate for 417 days, until 6 July 2009, making this the longest flank eruption of Etna since the 1991–1993 eruption that lasted 473 days.