Context: There is no single definition of an "aircraft carrier", and modern navies use several variants of the type. These variants are sometimes categorized as sub-types of aircraft carriers, and sometimes as distinct types of naval aviation-capable ships. Aircraft carriers may be classified according to the type of aircraft they carry and their operational assignments. Admiral Sir Mark Stanhope, former head of the Royal Navy, has said that "To put it simply, countries that aspire to strategic international influence have aircraft carriers".

Question: What is the definition of an "aircraft carrier"?
Answer: There is no single definition

Question: How may aircraft carriers be classified?
Answer: according to the type of aircraft they carry and their operational assignments

Question: Who is Admiral Sir Mark Stanhope?
Answer: former head of the Royal Navy

Question: Who said, "countries that aspire to strategic international influence have aircraft carriers"?
Answer: Admiral Sir Mark Stanhope

Question: What is the definition of an "warcraft carrier"?
Answer: Unanswerable

Question: How may aircraft be classified?
Answer: Unanswerable

Question: Who is Admiral Sir Mark Royal?
Answer: Unanswerable

Question: Who said, "countries that aspire to strategic local influence have aircraft carriers"?
Answer: Unanswerable

Question: what type of carrier has a single definition
Answer: Unanswerable