Question: What is the second-busiest airport in the state, after Logan International Airport due to intense corporate travel to and from the island in the busy summer months, Provincetown Municipal Airport or Nantucket Memorial Airport ? 
Sentence (from "Nantucket Memorial Airport"): Nantucket Memorial Airport (IATA: ACK, ICAO: KACK, FAA LID: ACK) is a public airport on the south side of the island of Nantucket in the U.S. state of Massachusetts.
Relevant evidence: Yes