5-Tuple with the BLEU score, n-gram precisions, brevity penalty,
reference length, and translation length
precision_numerators = Counter()
precision_denominators = Counter()
ref_length, trans_length = 0, 0
assert len(reference_corpus) == len(translation_corpus), \
"The number of translations and their references do not match"
After Change
5-Tuple with the BLEU score, n-gram precisions, brevity penalty,
reference length, and translation length
precision_numerators = [0 for _ in range(max_n)]
precision_denominators = [0 for _ in range(max_n)]
ref_length, trans_length = 0, 0
for references in reference_corpus_list:
