_:B281705877a5d2e6f003bac296cf557fe . . "53"^^ . . . "natuurkunde"@nl . "fysica"@nl . . _:B281705877a5d2e6f003bac296cf557fe . _:B281705877a5d2e6f003bac296cf557fe . _:B281705877a5d2e6f003bac296cf557fe "2021-09-24"^^ . _:B281705877a5d2e6f003bac296cf557fe . _:B281705877a5d2e6f003bac296cf557fe . _:B281705877a5d2e6f003bac296cf557fe "075616289" . _:B281705877a5d2e6f003bac296cf557fe . _:B281705877a5d2e6f003bac296cf557fe . _:B281705877a5d2e6f003bac296cf557fe .