"alchemy"                  { "Build a laboratory and produce basic potions." }
"incendiary alchemy"       { "Produce incendiary potions." { "alchemy"} }
"advanced alchemy"         { "Produce more powerful potions."                               {"alchemy"} }
"alchemical conversion"    { "Convert resources to and from gold."                          {"alchemy"} }
"humanoid mutation"        { "Breed new, very powerful humanoid species."                   {"alchemy"} }
"beast mutation"           { "Breed new, very powerful beast species."                      {"alchemy"} }
"pig breeding"             { "Build a pigsty to feed your minions." }
"iron working"             { "Build a forge and produce metal weapons and armor." }
"jewellery"                { "Build a jeweler room and produce magical rings and amulets."  {"iron working" }}
"distillation"             { "Beer is for dwarves. Build a distillery and make rat moonshine for your minions."}
"two-handed weapons"       { "Produce war hammers and battle axes."                         {"iron working" }}
"traps"                    { "Produce traps in the workshop." }
"advanced traps"           { "Produce more advanced traps and mechanisms." { "traps"} }
"archery"                  { "Produce bows and arrows." }
"sorcery"                  { "Learn basic spells." }
"advanced sorcery"         { "Learn more advanced spells."                                  {"sorcery"}}
"magical weapons"          { "Produce melee weapons that deal magical damage"               {"advanced sorcery"}}
"master sorcery"           { "Learn the most powerful spells."                              {"advanced sorcery"}}
"demonology"               { "Build demon shrines and attract demons."                      {"advanced sorcery"}}
"worship"                  { "Build angel shrines and attract angels."}
"automatons"               { "Build mechanical creatures that work and fight for you."}
"advanced automatons"      { "Build advanced mechanical creatures that work and fight for you." {"automatons"}}
"automaton brains"         { "Build automatons that behave like humanoids."                 {"advanced automatons"}}
"aerodynamics"             { "Build flying automatons."                                     {"advanced automatons"}}
