Q5. a. [10 pts] Sentiment analysis: consider the following review of a restaurant: "I took my father out for dinner to Le Bistro on New Year's Eve. The dcor and service were fantastic. We enjoyed the food, especially their French countryside specials and their Chardonnay collections. However, my father thought the menu prices were a bit on the high side. Valet parking was also expensive. Overall, we definitely recommend Le Bistro for special occasions!" Overall rating: 8 stars out of 10 " Identify the opinion object(s), feature(s), opinion(s), opinion holder(s) and opinion time in this review. b. [10 pts] Design a sentiment analysis system for restaurant reviews (see example in 5a). Your answer should make use of the techniques discussed in class. The output of the system should assign a sentiment label of Positive or Negative to reviews.