@prefix data: . @prefix : . @prefix xsd: . data:be4ac61d-7c7c-3dae-9a68-047d5ac9db0b :endDate "2019-08-31"^^xsd:date ; :startDate "2019-06-01"^^xsd:date ; a :Period . :takesPlaceAt data:be4ac61d-7c7c-3dae-9a68-047d5ac9db0b .