First, identify and list at least five (5) key challenges in Sentiment Analysis

Question 1: (a) First, identify and list at least five (5) key challenges in Sentiment Analysis. (b) Next, conduct some research to find a number of companies that provide Sentiment Analysis services (e.g., IBM Watson). Based on the descriptions of their products/services, explain how these companies attempt to enhance the accuracy, precision, and effectiveness of their Sentiment Analysis systems. This information can be extracted from the way each company describes and promotes its services/products. (c) Now, looking back at the list that you generated in part (a), do the approaches/techniques that you identified in part (b) address any of those challenges? Please explain.