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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _compute_precision(references, translation, n):
 """Compute ngram precision. Parameters references: list(list(str)) A list of references. translation: list(str) A translation. n: int Order of n-gram. Returns ------- matches: int Number of matched nth order n-grams candidates Number of possible nth order n-grams """

    matches = 0
    candidates = 0
    ref_ngram_counts = Counter()

    for reference in references:
        ref_ngram_counts |= _ngrams(reference, n)
    trans_ngram_counts = _ngrams(translation, n)
    overlap_ngram_counts = trans_ngram_counts & ref_ngram_counts
    matches += sum(overlap_ngram_counts.values())
    possible_matches = len(translation) - n + 1
    if possible_matches > 0:
        candidates += possible_matches

    return matches, candidates