Table: ngc_objects_3001_4000_4
Columns: ngc_number
object_type
constellation
right_ascension_j2000
declination_j2000

Question: what is the declination (j2000) that has a constellation of hydra and a right ascension (j2000) of 10h46m44.9s?
SQL: SELECT "declination_j2000" FROM ngc_objects_3001_4000_4 WHERE "constellation" = 'hydra' AND "right_ascension_j2000" = '10h46m44.9s'

Question: What is the ngc number when the object type is lenticular galaxy and the constellation is hydra?
SQL: SELECT MAX("ngc_number") FROM ngc_objects_3001_4000_4 WHERE "object_type" = 'lenticular galaxy' AND "constellation" = 'hydra'

Question: what is the object type when the ngc number is 3314?
SQL: SELECT "object_type" FROM ngc_objects_3001_4000_4 WHERE "ngc_number" = 3314

Question: what is the ngc number when the constellation is leo and the declination (j2000) is °42′13″?
SQL: SELECT AVG("ngc_number") FROM ngc_objects_3001_4000_4 WHERE "constellation" = 'leo' AND "declination_j2000" = '°42′13″'

Question: what is the right ascension (j2000) with the ngc number less than 3384, the constellation is hydra and the object type is spiral galaxy?
SQL: SELECT "right_ascension_j2000" FROM ngc_objects_3001_4000_4 WHERE "ngc_number" < 3384 AND "constellation" = 'hydra' AND "object_type" = 'spiral galaxy'