PREFIX : SELECT DISTINCT ?wellbore_name ?uName WHERE { ?w a :Wellbore ; :name ?wellbore_name ; :hasWellboreInterval ?interval . ?c :extractedFrom ?interval ; a :Core . ?interval :overlapsWellboreInterval ?zone . ?zone :hasUnit ?u . ?u :name ?uName FILTER regex(?uName, "Tarbert", "i") }