The Responsa are letters written by the greatest Rabbis of each generation, answering questions of Judaism and Jewish laws.
Judaism is not a sacred text, it is a religion and that religion happens to have a sacred text. To learn more about Judaism's Sacred Text, read the Related Question.
The Torah
The Koran is the religious text of Islam. The Torah is the core religious text of Judaism. Neither are places.
Judaism
Torah
Yes, the Torah is the basic text of Judaism, containing its beliefs and laws.
Responsa.
Meir ben Baruch has written: 'Birkhot Maharam' -- subject(s): Benedictions, Judaism, Liturgy 'She'elot u-teshuvot Maharam' -- subject(s): Responsa 'Perush ha-Maharam' -- subject(s): Commentaries, Mishnah 'Teshuvot, pesakim u-minhagim' -- subject(s): Bible, Commentaries, Jewish law, Responsa
Yes.
Judaism
The Tanakh (Jewish Bible).
Yes.