{
  "name": "Lineage strip data: When the Green Star Waned (1925) to Space Opera (1974)",
  "desc": "The four nodes of the lineage strip in print order, with year, venue, the relation to the next node (dates only) and a source for each.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "Genre Fiction Lineage",
  "url": "https://genrefictionlineage.com/science-fiction/space-opera/",
  "from": [
    "Summary of the other CSV files on the same page (sources read 3 November 2026)"
  ],
  "how": "Compiled by Genre Fiction Lineage from the data listed",
  "data_by": [
    "Dated uses of the name from the citation lines of the Historical Dictionary of Science Fiction, ed. Jesse Sheidlower (sfdictionary.com); stories and placements from The Encyclopedia of Science Fiction, eds. John Clute, David Langford and Graham Sleight (sf-encyclopedia.com), paraphrased; entries listed on the entry page"
  ]
}