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Jan van Wavere died in 1521.
Jan van Beers was born on 1821-02-22.
No. Not until 1514 - 1521.
Jan Firlej was born in 1521.
6 c - 4 c = 2 c, 7fl oz - 5 fl oz = 2 fl oz
therefore the answer is 2 c 2 fl oz