_:b61528048 _:b61528049 . _:b61528047 _:b61528050 . _:b61528051 "2017-01-01"^^ . _:b61528049 "2017-12-31"^^ . _:b61528047 . _:b61528050 _:b61528051 . _:b61528047 _:b61528048 .