Assertion: nilgiri class frigate | /r/CapableOf | serve as workhorse
Facets:
value: during early 1990s
type: TEMPORAL
value: during the 1980s
type: TEMPORAL
Source sentences:
text: The Nilgiri-class frigates served as the mainstay and workhorse of the Indian Navy during the 1980s and early 1990s and they formed the 14th Frigate Squadron.