Assertion: blue book | /r/CapableOf | investigate so-called lubbock lights
Facets:
value: under ruppelt's direction
type: LOCATION
Source sentences:
text: Under Ruppelt's direction, Blue Book investigated a number of well-known UFO cases, including the so-called Lubbock Lights, and a widely publicized 1952 radar/visual case over Washington D.C..