CREATE TABLE table_name_23 (number_of_languages NUMBER, frequency VARCHAR2, publisher VARCHAR2)

What is the mean number of languages for the monthly frequency when the publisher is the hearst corporation?
SELECT AVG(number_of_languages) FROM table_name_23 WHERE frequency = "monthly" AND publisher = "hearst corporation"
SELECT AVG("number_of_languages") FROM "table_name_23" WHERE "frequency" = "monthly" AND "hearst corporation" = "publisher"