Dedham Island is a neighbourhood and its consensus geometry is derived from mz.
{"qs:localhoods":7,"geom:latitude":42.263256,"wof:name":"Dedham Island","counts:names_total":3,"mz:is_current":0,"qs:gn_nam_loc":"Dedham, Norfolk, Massachusetts, US","wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102084403,"localadmin_id":404476435,"locality_id":85950821,"neighbourhood_id":85813897,"region_id":85688645}],"wof:geom_alt":["quattroshapes_pg","quattroshapes","zetashapes"],"gn:elevation":30,"mz:min_zoom":13,"lbl:latitude":42.263256,"qs:gn_adm0_cc":"US","geom:area":0,"mz:is_funky":0,"mz:is_official":0,"qs:name":"Dedham Island","qs:woe_adm2":12588710,"counts:concordances_total":4,"qs:woe_adm1":2347580,"edtf:deprecated":"2016-09-22","geom:type":"Point","qs:woe_adm0":23424977,"wof:lastmodified":1582337032,"qs:photo_sum":348,"wof:belongsto":[102191575,404476435,85633793,85950821,102084403,85688645],"mps:latitude":42.266161,"wof:repo":"whosonfirst-data-admin-us","wof:lang":["eng"],"wof:country":"US","counts:names_preferred":1,"geom:area_square_m":186637.331921,"counts:names_variant":2,"wof:breaches":[],"edtf:inception":"uuuu","qs:woe_local":2390265,"iso:country":"US","qs:gn_fcode":"PPL","geom:bbox":"-71.181448,42.263256,-71.181448,42.263256","name:eng_x_preferred":["Dedham Island"],"src:lbl:centroid":"yerbashapes","wof:superseded_by":[],"qs:photo_max":98,"wof:geomhash":"89e55060adc7f113a7fd2a66f6dbb976","zs:pop10":265,"wof:placetype_id":102312319,"qs:local_max":1473,"qs:woe_ver":"7.10.0","mz:is_ceased":0,"qs:placetype":"Suburb","src:population":"zetashapes","name:unk_x_variant":["Dedham Island"],"qs:quad_count":19,"wof:placetype":"neighbourhood","mz:max_zoom":18,"qs:woe_lau":0,"qs:gn_local":4934664,"mz:is_deprecated":1,"zs:housing10":199,"mz:tier_locality":2,"geom:longitude":-71.181448,"wof:population":265,"wof:id":85813897,"qs:local_sum":3159,"qs:name_local":"Dedham","qs:name_adm2":"Norfolk","wof:concordances":{"gn:id":4934668,"gp:id":2390267,"qs:id":898634,"qs_pg:id":898634},"name:eng_x_variant":["Dedham Is"],"src:geom":"mz","src:geom_alt":["quattroshapes","quattroshapes_pg","zetashapes"],"qs:name_adm0":"United States","qs:name_adm1":"Massachusetts","wof:tags":[],"wof:population_rank":2,"zs:blockids":[250251304023018,250251304022020,250251304022014,250251304022010,250251304022019,250251304022018,250251304022017,250251304022016,250251304022015,250251304022011,250251304022012,250251304022013,250251304023015],"counts:names_languages":2,"mz:is_hard_boundary":0,"mps:longitude":-71.170122,"qs:gn_namadm1":"MA","qs:gn_name":"Dedham Island","wof:supersedes":[],"lbl:longitude":-71.181448,"mz:is_landuse_aoi":0,"wof:parent_id":85950821,"wof:placetype_names":["neighbourhood"],"mz:hierarchy_label":0,"edtf:cessation":"uuuu"}