The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Grammy.com[4][5]: 'Held on Feb. 23, 1983, at the historic Shrine Auditorium in Los Angeles, the GRAMMYs' silver anniversary was hosted by John Denver.' No start time is given, so the pin is the all-day date.
Gives the date, Shrine Auditorium, host John Denver, CBS, the winners and nominees, and the performers.[1]
Silver-anniversary four-piano performance.[1]
Grammy.com[1][5]: held on Feb. 23, 1983 at the Shrine Auditorium, hosted by John Denver; Toto won Record, Album and Producer of the Year and six GRAMMYs in all; Eddie Murphy's stage antics; John Williams' three E.T. wins.
Grammy.com[1][4]: '25th Annual GRAMMY Awards Feb. 23, 1983'; Toto IV won Album of the Year over Cougar, Fagen, Joel and McCartney, and "Rosanna" won Record of the Year.
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