Assertion: nebula's spectrum | /r/HasProperty | unusual
Facets:
value: extremely
type: DEGREE
Source sentences:
text: It was identified as such in 1942, when Rudolf Minkowski found that its optical spectrum was extremely unusual.
text: At the centre of the Crab Nebula are two faint stars, one of which was identified as the star responsible for the nebula as long ago as 1942, when Rudolf Minkowski found that its optical spectrum was extremely unusual.
text: It has been identified as such since 1942, when Rudolf Minkowski found that its optical spectrum was extremely unusual.