article_types:opinion, brexit, content-level:2, free_tags:business-sectors:energy, free_tags:business-sectors:oil-and-gas, free_tags:named-features:campaigns-and-appeals:mccrone-report-50th-anniversary, free_tags:narratives:scottish-independence, free_tags:people:politicians:alex-salmond, indyref, locations:scotland, msps, news, politicians, politics, scotland, scottish politics, source:newsquest, topics:business, topics:history, topics:industry, topics:national-government, topics:politics, uk, uk politics, content-level:3, free_tags:organisations:political:snp, free_tags:named-features:other-features:labours-pfi-scandal