Definition: 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.
Input: [['A.S. Gubbio 1910', 'LEAGUE', 'Serie D'], ['Italy', 'CAPITAL', 'Rome'], ['Italy', 'LEADER', 'Sergio Mattarella'], ['A.S. Gubbio 1910', 'GROUND', 'Italy'], ['Serie D', 'CHAMPIONS', 'S.S. Robur Siena']]

The champions of Serie D are S.S. Robur Siena in which AS Gubbio 1910 also play. This latter club has their ground in Italy where the leader is Sergio Mattarella and the capital is the city of Rome.