@prefix owl:   <http://www.w3.org/2002/07/owl#> .
@prefix ssd:   <http://www.w3.org/ns/sparql-service-description#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .
@prefix skos:  <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix qb:    <http://purl.org/linked-data/cube#> .
@prefix dgu:   <http://reference.data.gov.uk/def/reference/> .
@prefix ui:    <http://purl.org/linked-data/registry-ui#> .
@prefix dct:   <http://purl.org/dc/terms/> .
@prefix reg:   <http://purl.org/linked-data/registry#> .
@prefix api:   <http://purl.org/linked-data/api/vocab#> .
@prefix dcat:  <http://www.w3.org/ns/dcat#> .
@prefix vann:  <http://purl.org/vocab/vann/> .
@prefix prov:  <http://www.w3.org/ns/prov#> .
@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
@prefix cc:    <http://creativecommons.org/ns#> .
@prefix void:  <http://rdfs.org/ns/void#> .
@prefix org:   <http://www.w3.org/ns/org#> .
@prefix odrs:  <http://schema.theodi.org/odrs#> .
@prefix env-ui: <http://environment.data.gov.uk/registry/structure/ui/> .
@prefix hike:  <https://data.geoscience.earth/ncl/def/hike/> .
@prefix version: <http://purl.org/linked-data/version#> .
@prefix dbo:   <http://dbpedia.org/ontology/> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ldp:   <http://www.w3.org/ns/ldp#> .
@prefix time:  <http://www.w3.org/2006/time#> .
@prefix vs:    <http://www.w3.org/2003/06/sw-vocab-status/ns#> .
@prefix dc:    <http://purl.org/dc/elements/1.1/> .

<https://data.geoscience.earth/ncl/DrillingMethod/sidewallCoreBullet>
        a                skos:Concept ;
        dct:source       "This vocabulary"@en ;
        skos:broader     <https://data.geoscience.earth/ncl/DrillingMethod/sidewallCore> ;
        skos:definition  "Percussion cores are taken by firing hollow bullets into the formation. The bullets are attached to the tool by fasteners, and are retrieved, along with the core inside, by pulling up the tool and the fasteners. Percussion coring tools typically hold 20 to 30 bullets, but two or three tools can be combined on one run in the hole."@en ;
        skos:notation    "8.1"^^xsd:ID ;
        skos:prefLabel   "sidewall core bullet"@en .