Q: Given an input stream, the objective of this task is to classify whether words in the stream are grammatically correct or not. The input to this task is a stream of words, possibly from captions generated by a speech-to-text engine, and the output is a classification of each word from the labels (reason) = [NO_DIFF (correct), CASE_DIFF (case error), PUNCUATION_DIFF (punctuation error), CASE_AND_PUNCUATION_DIFF (both case and punctuation error), STEM_BASED_DIFF (stem word error), DIGIT_DIFF (digit error), INTRAWORD_PUNC_DIFF (intra-word punctuation error), and UNKNOWN_TYPE_DIFF (an error that does not corrrespond to the previous categories)].
["let's", 'do', 'some', 'word', 'problems', 'that', 'are', 'essentially', 'dealing', 'with', 'slope', 'of', 'a', 'line', 'and', 'you', 'might', 'see', 'these', 'being', 'referred', 'to', 'as', 'direct', 'variation', 'models', 'because', "we're", 'going', 'to', 'model', "what's", 'being', 'described', 'in', 'this', 'problem', "we're", 'gonna', 'graph', 'it', 'out', 'and', 'then', 'hopefully', "we're", 'gonna', 'be', 'able', 'to', 'actually', 'answer', 'their', 'question', 'so', "let's", 'see', 'what', 'are', "they're", 'asking', 'the', 'current', 'standard', 'for', 'low-flow', 'showerheads', 'is', '2.5', 'gallons', 'per', 'minute', '2.5', 'gallons', 'per', 'minute', 'all', 'right', 'calculate', 'how', 'long', 'it', 'would', 'take', 'to', 'fill', 'a', '30', 'gallon', 'bathtub', 'using', 'such', 'a', 'showerhead', 'to', 'supply', 'the', 'water', 'so', 'we']
A:
CASE_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF PUNCUATION_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF PUNCUATION_DIFF CASE_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF NO_DIFF PUNCUATION_DIFF UNKNOWN_TYPE_DIFF NO_DIFF