Question: Information:  - Alexander Keiller FSA FGS ( 1889 -- 1955 ) was a Scottish archaeologist and businessman who worked on an extensive prehistoric site at Avebury in Wiltshire , England . Keiller was heir to the marmalade business of his family , James Keiller & Son that had been established in 1797 in Dundee , and exported marmalade and confectionery across the British Empire . He used his wealth to acquire a total of 950 acres ( 3.8 km2 ) of land in Avebury for preservation and he conducted excavations , re-erected stones on the Avebury site , and created a museum to interpret the site . He also pioneered aerial photography for archaeological interpretation . Keiller founded the Morven Institute of Archeological Research there , now the Alexander Keiller Museum and held by the National Trust after Keiller 's widow gifted the building to the Trust in 1966 . In 1943 he had sold the land at Avebury to the National Trust for its agricultural value only .  - Hampshire (; abbreviated Hants, archaically known as the County of Southampton) is a county on the southern coast of England in the United Kingdom. The county town of Hampshire is Winchester, the former capital city of England. Hampshire is the most populous ceremonial county in the United Kingdom (excluding the metropolitan counties) with almost half of the county's population living within the South Hampshire conurbation which includes the cities of Southampton and Portsmouth. The larger South Hampshire metropolitan area has a population of 1,547,000. Hampshire is notable for housing the birthplaces of the Royal Navy, British Army, and Royal Air Force. It is bordered by Dorset to the west, Wiltshire to the north-west, Berkshire to the north, Surrey to the north-east, and West Sussex to the east. The southern boundary is the coastline of the English Channel and the Solent, facing the Isle of Wight.  - Wiltshire (or ) is a county in South West England with an area of . It is landlocked and borders the counties of Dorset, Somerset, Hampshire, Gloucestershire, Oxfordshire and Berkshire. The county town was Wilton but Wiltshire Council is now based in the new county town of Trowbridge.    Given the information above, choose from the list below the object entity that exhibits the relation 'military branch' with the subject 'alexander keiller '.  Choices: - air force  - british army  - royal navy
Answer:
royal navy