Assertion: zodiac's letter | /r/HasProperty | authentic
Facets:
Source sentences:
text: Even John Shimoda of the US Postal Service crime lab reversed his previous opinion that the letter was authentic and declared the letter a fake.
text: Shimoda believed that the 1978 letter was an authentic Zodiac communication, and he also examined the writings in the Riverside case which Morrill had previously concluded were the work of the Zodiac.