https://musicbrainz.org/artist/d3dd86df-2f57-4a97-8100-d09915343f60 has member "Eddie Moohan (from 1991 until 1992, from 2000 to present: bass guitar)". While the code for JSON-LD claims that "given two rels with different dates, this assumes it should take the earliest start date and the latest end date, assuming undef as indefinitely in the future" (which would make it 1991-present), what actually happens is that

"startDate":"1991","endDate":"1992"

is returned.