Table: urban_areas_population
Columns: rank_2011
change_since_2006
urban_area
county
population_2011
increase_since_2006

Question: How many places has the rank changed since 2006, for Clane? 
SQL: SELECT "change_since_2006" FROM urban_areas_population WHERE "urban_area" = 'Clane'

Question: In what counties is the 2011 population 17908?
SQL: SELECT "county" FROM urban_areas_population WHERE "population_2011" = 17908

Question: In what urban area is the 2011 population 21561? 
SQL: SELECT "urban_area" FROM urban_areas_population WHERE "population_2011" = 21561

Question: How many places did the rank change since 22006 for County Leitrim? 
SQL: SELECT COUNT("change_since_2006") FROM urban_areas_population WHERE "county" = 'County Leitrim'

Question: Which urban area has a 2011 population of 5010? 
SQL: SELECT "urban_area" FROM urban_areas_population WHERE "population_2011" = 5010