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: In rounds 2 and 7, Vaccarella raced with a Climax FPF 1.5 L4 engine.
Example Output: [['Nino Vaccarella', 'ROUNDS', '2, 7'], ['Scuderia SSS Republica di Venezia', 'ENGINE', 'Climax FPF 1.5 L4'], ['Scuderia SSS Republica di Venezia', 'DRIVERS', 'Nino Vaccarella']]

Example Input: Highest, and fancy Indian food at The Dumpling Tree.
Example Output: [['The Dumpling Tree', 'food', 'Indian']]

Example Input: The Waterman, located miles above the city centre, serves British breakfast and is rated three stars,
Example Output:
[['The Waterman', 'food', 'English'], ['The Waterman', 'customer rating', 'average'], ['The Waterman', 'area', 'city centre']]