whosonfirst placetypes tree - for each whosonfirst placetype, shows what other placetypes are allowed to be its direct children

placetypes_tree.json

{
  "building": [
    "venue"
  ], 
  "county": [
    "postalcode", 
    "localadmin", 
    "locality"
  ], 
  "borough": [
    "macrohood", 
    "neighbourhood", 
    "neighborhood"
  ], 
  "localadmin": [
    "borough", 
    "campus", 
    "postalcode", 
    "locality"
  ], 
  "macrocounty": [
    "county"
  ], 
  "locality": [
    "borough", 
    "campus", 
    "macrohood", 
    "postalcode", 
    "neighbourhood", 
    "neighborhood"
  ], 
  "country": [
    "dependency", 
    "timezone", 
    "marinearea", 
    "macroregion", 
    "region", 
    "disputed"
  ], 
  "region": [
    "postalcode", 
    "localadmin", 
    "macrocounty", 
    "county", 
    "locality"
  ], 
  "macrohood": [
    "campus", 
    "neighbourhood", 
    "neighborhood"
  ], 
  "microhood": [
    "venue", 
    "building", 
    "address", 
    "campus", 
    "intersection"
  ], 
  "planet": [
    "ocean", 
    "timezone", 
    "marinearea", 
    "continent"
  ], 
  "dependency": [
    "macroregion", 
    "region"
  ], 
  "macroregion": [
    "region"
  ], 
  "address": [
    "venue", 
    "building"
  ], 
  "disputed": [
    "macroregion", 
    "region"
  ], 
  "empire": [
    "country"
  ], 
  "intersection": [
    "venue", 
    "building", 
    "address"
  ], 
  "continent": [
    "empire", 
    "timezone", 
    "marinearea", 
    "country"
  ], 
  "campus": [
    "venue", 
    "building", 
    "address", 
    "intersection"
  ], 
  "neighbourhood": [
    "microhood", 
    "venue", 
    "building", 
    "address", 
    "campus", 
    "intersection"
  ]
}