_:b3978547 . "uncertain" . _:b4166950 . _:b3894316 . _:b4166951 . _:b3894317 . "1520" . . _:b4166950 "1520"^^ . _:b3978548 . _:b3978547 . _:b3978548 . _:b4166951 "1520"^^ . _:b3894316 "1520"^^ . _:b3894317 . . . _:b3894317 "1520"^^ . "uncertain" . _:b4166951 . _:b3978547 "1520"^^ . . _:b3978548 "1520"^^ . _:b4166950 . _:b3894316 .