(a) We use the following (part of lexicon) Consider below sentence: "my daughter whose first adult tooth has just developed programs" (Part of) lexicon: adult JJ has VBZ adult NN just RB daughter NN my PRPS developed VBD programs NNS developed VBN programs VBZ first JJ tooth NN first RB whose WPS With the given lexicon, how many different PoS taggings does the above sentence have? Justify. (b) Why is part of speech tagging problem posed as sequence to sequence problem? How does Viterbi algorithm optimize PoS tagging problem?