About: What are these that are arrayed in white robes?

Property	Value
rdf:type	http://data.carnegiehall.org/model/WorkPerformance
Event	Ninetieth Birthday Anniversary of Hon. Neal Dow of Maine (1894-03-18T14:45:00)
schema:workPerformed	http://data.carnegiehall.org/works/62997
http://data.carnegiehall.org/vocabulary/roles/choir	[unnamed choir]

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