{
  "space-location":
  [
    ["interstellar", "shattered-planet"]
  ],
  "item":
  [
    ["interstellar-science-pack", "promethium-science-pack"],
    ["interstellar-asteroid-chunk", "promethium-asteroid-chunk"]
  ],
  "recipe":
  [
    ["interstellar-science-pack", "promethium-science-pack"]
  ],
  "technology":
  [
    ["interstellar-science-pack", "promethium-science-pack"]
  ],
  "asteroid-chunk":
  [
    ["interstellar-asteroid-chunk", "promethium-asteroid-chunk"]
  ],
  "entity":
  [
    ["small-interstellar-asteroid", "small-promethium-asteroid"],
    ["medium-interstellar-asteroid", "medium-promethium-asteroid"],
    ["big-interstellar-asteroid", "big-promethium-asteroid"],
    ["huge-interstellar-asteroid", "huge-promethium-asteroid"]
  ]
}