CREATE TABLE table_29289372_1 (population__2010_ VARCHAR2, income_classification VARCHAR2, city_municipality VARCHAR2)

When itogon, benguet is the city/municipality and 1st class is the income classification how many measurements of population in 2010?
SELECT COUNT(population__2010_) FROM table_29289372_1 WHERE income_classification = "1st Class" AND city_municipality = "Itogon, Benguet"
SELECT COUNT("population__2010_") FROM "table_29289372_1" WHERE "1st Class" = "income_classification" AND "Itogon, Benguet" = "city_municipality"