Assertion: falcon's number | /r/CapableOf | vary in a 16-year period
Facets:
value: from two
type: TEMPORAL
Source sentences:
text: Within a breeding territory, a pair may have several nesting ledges; the number used by a pair can vary from one or two up to seven in a 16-year period.
text: Within a breeding territory, a pair may have several nesting ledges; the number used by a pair can vary from one or two up to seven in a 16-year period.