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: [["Dead Man's Plack", 'LOCATION', 'England'], ['England', 'CAPITAL', 'London'], ['England', 'LANGUAGES', 'Cornish language'], ["Dead Man's Plack", 'MATERIAL', 'Rock (geology)']]

The Dead Man's Plack is a rock formation in Cornwall. Located to the west of England's capital, London, Cornwall is a county with its own language, known as Cornish.