In this task, you are given triplets. Each triplet is in the form of [subject, predicate, object]. Your task is to generate proper sentence that utilizes these triples. The objective is to construct a sentence that (a) captures the facts specified in the triples and (b) is a well-formed sentence easily understandable by a human. All triple values need not be used directly in the sentence as long as the facts are adequately captured.

[Q]: [['[TABLECONTEXT]', 'OPUS', '4'], ['[TABLECONTEXT]', '[TITLE]', 'List of operas by Siegfried Wagner'], ['4', 'PREMIÈRE_DATE', '13 October 1905']]
[A]: Siegfried Wagner's Opus 4 opera premiered on October 13th, 1905.


[Q]: [['Portuguese Grand Prix', 'RACE_WINNER', 'Nigel Mansell']]
[A]: The race winer of the portuguese grand prix is nigel mansell.


[Q]: [['William Anders', 'DATE_OF_RETIREMENT', '"1969-09-01"'], ['William Anders', 'DATE_OF_BIRTH', '"1933-10-17"'], ['William Anders', 'BIRTH_PLACE', 'British Hong Kong']]
[A]:
William Anders retired on 1 September 1969, having been born on 17 October 1933 in British Hong Kong.