_:b20831 _:b19577 . _:b20825 _:b19554 . _:b19554 . _:b19577 . "square prefixed metre"@en . _:b19212 _:b20825 . _:b19598 "1"^^ . _:b19577 "2"^^ . _:b20832 . _:b20825 _:b20830 . _:b20830 _:b19565 . _:b19212 . _:b19565 . _:b19565 . _:b20831 _:b20832 . _:b19212 . . _:b20832 _:b19598 . _:b19554 . . _:b19577 . _:b20830 _:b20831 . _:b19565 "1"^^ . _:b19598 . _:b19598 . _:b19554 .