"fire_hydrant:type"=>"underground","water_source"=>"main"
"water_source"=>"main","fire_hydrant:type"=>"underground","fire_hydrant:position"=>"sidewalk"
"water_source"=>"main","fire_hydrant:type"=>"underground","fire_hydrant:position"=>"sidewalk"
"water_source"=>"main","fire_hydrant:type"=>"pillar","fire_hydrant:position"=>"lane"
"water_source"=>"main","fire_hydrant:type"=>"underground"
"water_source"=>"main","fire_hydrant:type"=>"underground","fire_hydrant:position"=>"lane"