| http://www.w3.org/ns/prov#value | - Although Condon's project in the late 60s gets a gift, or a challenge [as it did on all types of cases], the spectacular physical and high-strangeness eras" of the mid/late 60s and the mid-70s get a share of airborne sightings but are not striking like they are when you graph other case types, and are interspersed regularly with dead spots.
|