Specific questions like will I get married to a particular person are not answerable from the birth-kundali. To answer such question, kundali is created of the question itself. Such kundali made of question in the form of thought itself is called prashna kundali. This kundali is completely different from birth-kundali and does not require birth details. The question should not be a casual question but should come from deep within of the questioner.
In KP-Nadi Jyotish, the questioner is asked a number from 1 to 249 to fix the nakshatra.