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: [['United States', 'LEADER_NAME', 'Barack Obama'], ['United States', 'CAPITAL', 'Washington, D.C.'], ['1634: The Ram Rebellion', 'COUNTRY', 'United States'], ['United States', 'ETHNIC_GROUP', 'Asian Americans']]

1634 The Ram Rebellion comes from the United States, the leader of this country is Barack Obama and the capital is Washington, D.C.. They have an ethnic group called Asian Americans.