Question: When 318676 is the population of 2010 and 1st Class is the income classification what is the area in kilometers squared?
SQL: SELECT "Area (km²)" FROM "1-29289372-1" WHERE "Income Classification" = '1st Class' AND "Population (2010)" = 318676.0;

Question: When Itogon, Benguet is the city/municipality and 1st Class is the income classification how many measurements of population in 2010?
SQL: SELECT COUNT("Population (2010)") FROM "1-29289372-1" WHERE "Income Classification" = '1st Class' AND "City/Municipality" = 'Itogon, Benguet';

Question: When 82.74 is the area in kilometers squared what is the pop.density (per km2)?
SQL: SELECT "Pop. density (per km²)" FROM "1-29289372-1" WHERE "Area (km²)" = '82.74';

Question: When 106 is the area in kilometers squared what is the city/municipality?
SQL: SELECT "City/Municipality" FROM "1-29289372-1" WHERE "Area (km²)" = '106';