Franciscus Mercurius van Helmont ( baptised 20 October 1614 – 1698 or 1699 ) was a Flemish alchemist and writer , the son of Jan Baptist van Helmont .
Head entity: jan baptist van helmont Q294169 24 25 26 27
Tail entity: franciscus mercurius van helmont Q445918 0 1 2 3
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Inverse relation (tail \u2192 head): P40