This task is about using the specified sentence and converting the sentence to Resource Description Framework (RDF) triplets of the form (subject, predicate object). The RDF triplets generated must be such that the triplets accurately capture the structure and semantics of the input sentence. The input is a sentence and the output is a list of triplets of the form [subject, predicate, object] that capture the relationships present in the sentence. When a sentence has more than 1 RDF triplet possible, the output must contain all of them.

Example Input: Alan Buck joined at 1st August 1964
Example Output: [['Alan Buck', 'DATE_JOINED', '1964-08-01 00:00:00']]

Example Input: William Anders (born in British Hong Kong) was selected by NASA in 1963 after attending AFIT, M.S. 1962 and retired on 1969-09-01.
Example Output: [['William Anders', 'DATE_OF_RETIREMENT', '"1969-09-01"'], ['William Anders', 'WAS_SELECTED_BY_NASA', '1963'], ['William Anders', 'BIRTH_PLACE', 'British Hong Kong'], ['William Anders', 'ALMA_MATER', '"AFIT, M.S. 1962"']]

Example Input: The United States Air Force is the operating organization for Al Asad Airbase. Lockheed AC-130's can be found on US aircraft carriers. Two noteworthy battles fought by the air force are the Invasion of Grenada and The Operation Enduring Freedom.
Example Output:
[['Al Asad Airbase', 'OPERATING_ORGANISATION', 'United States Air Force'], ['United States Air Force', 'BATTLES', 'Invasion of Grenada'], ['United States Air Force', 'ATTACK_AIRCRAFT', 'Lockheed AC-130'], ['United States Air Force', 'BATTLES', 'Operation Enduring Freedom']]