rdfTypeTimeline axis is valid_time — when each source says the fact was true in the world, not when Dontopedia learned about it. Retracted rows are kept for provenance; coloured stripes indicate the context kind.
doc:genealogy/frontier-massacres/10622# Frontier conflict event: Attack on Aboriginal people - Swampy area of Alexandra River, about 15 miles west-north-west of Donor's Hill (December 1878) Source dataset: University of Newcastle, "Colonial Frontier Massacres in Australia 1788…
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