question: What is the highest NGC number that has a Declination ( J2000 ) of °04′58″ and a Apparent magnitude larger than 7.3?
answer: SELECT MAX(ngc_number) FROM table_name_5 WHERE declination___j2000__ = "°04′58″" AND apparent_magnitude > 7.3
context: CREATE TABLE table_name_5 (ngc_number INTEGER, declination___j2000__ VARCHAR, apparent_magnitude VARCHAR)