_:b19373 . . _:b19963 "1"^^ . _:b19960 . _:b19963 . . _:b19961 . _:b20972 _:b20973 . _:b19963 . _:b20970 _:b20971 . _:b19962 . _:b20971 _:b19961 . _:b20971 _:b20972 . _:b20970 _:b19960 . _:b19962 . _:b20973 . _:b19961 . _:b20973 _:b19963 . _:b19960 . _:b20972 _:b19962 . _:b19960 . _:b19962 . _:b19373 . _:b19961 "1"^^ . "prefixed metre per prefixed secon (time) squared"@en . _:b19373 _:b20970 .