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.

The Flagpole is a landmark at WIlliams Air Force Base that was erected in 1941 by Del E. Webb Construction Company and is located at 33°18′25″N 111°40′45″W / 33.30694°N 111.67917°W.
[['Flagpole', 'SUMMARY', 'Flagpole erected in 1941 by Del E. Webb Construction Company'], ['Flagpole', 'LOCATION', 'The flagpole was once located at 10 St. between D and E Sts. at Williams Air Force Base. It is now located at the entrance of the Phoenix-Mesa Gateway Airport which is located on the grounds which once belonged to Williams AFB. 33°18′25″N 111°40′45″W / 33.30694°N 111.67917°W'], ['1', 'LANDMARK_NAME', 'Flagpole'], ['[TABLECONTEXT]', '[TITLE]', 'Williams Air Force Base'], ['[TABLECONTEXT]', 'NUMBER', '1']]