Assertion: canyon | /r/CapableOf | ’ been magnet
Facets:
value: for several years
type: TEMPORAL
value: for plane spotters
type: TRANSITIVE-OBJECT
Source sentences:
text: But the canyon is part of a restricted military airspace called the R-2508 Complex, used for air-combat training, supersonic flight tests and other military operations, and it’s been a magnet for plane spotters for several years.