Table: tv_stations_mexico
Columns: callsign
network
city_of_license
d_erp
owner_operator

Question: What's the network in Pachuca, Hidalgo?
SQL: SELECT "network" FROM tv_stations_mexico WHERE "city_of_license" = 'pachuca, hidalgo'

Question: What's the network that has a callsign of XHTM and a D ERP of •?
SQL: SELECT "network" FROM tv_stations_mexico WHERE "d_erp" = '•' AND "callsign" = 'xhtm'

Question: What's the city of license having a D ERP of 100kw?
SQL: SELECT "city_of_license" FROM tv_stations_mexico WHERE "d_erp" = '100kw'

Question: What's the D ERP in San Martin Texmelucan, Puebla?
SQL: SELECT "d_erp" FROM tv_stations_mexico WHERE "city_of_license" = 'san martin texmelucan, puebla'