"technology"=>"GSM 900","tower:type"=>"communication"
"technology"=>"GSM 900","tower:type"=>"communication","survey:date"=>"2020-07-15"
"technology"=>"GSM 900","tower:type"=>"communication","tower:construction"=>"lattice_steel"
"technology"=>"GSM 1800;GSM 900","tower:type"=>"communication"