this question is about semantic divergence, please answer with some explains and do not copy from other sample, thanks.

- . There is a sentence "Please copy the email below to John tomorrow." The table below shows a possible part-of-speech distribution for each of the words in general corpus.. Noun Verb Adverb Articles Preposition please 1 copy 0.3 0.7 the 1 email 0.6 0.4 below 0.2 0.8 to 0.1 0.9 John 1 tomorrow 0.1 0.05 0.85 0 8 (a)Train a HMM tagger on the corpus and returns the correct sequence for this example. (1) Outline the assumptions made by an HMM; (i) Give the probabilities which need to be derived from the corpus; (iii) Explain how these are used to calculate the probability of a sequence of tags for a given sequence of words. (b) A brute-force algorithm and the Viterbi algorithm are two alternatives which might be used to identify the best sequence of tags for a given sequence of words. Making reference to the example sentence given, outline these two algorithms and explain which would generally be used in practice and why