birthhigh confidence
1850-08-20
1 linked sourceBorn 1850-08-20 · Died 1921-03-07
Sybren Valkema was born (1850-08-20). Source: Wikidata referenced P569 statement
Sybren Valkema died (1921-03-07). Source: Wikidata referenced P570 statement
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1850-08-20
1 linked source1921-03-07
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Accepted in the user-authorized Wikidata CC0 bulk publication run.
Q13138203$170E6017-15CC-47A5-9E99-337DA3E523EB; 3 source anchors · Wikidata · P569
Open original sourceQ13138203$B689F2A9-557D-45D0-A56A-3AF38117DEA4; 2 source anchors · Wikidata · P570
Open original source