Let E1 denote the event that a temperature exceeds 58 Celsius, let E2 denote the event that a temperature is less than or equal to 98 Celsius, and let E3 denote the event that a temperature is greater than or equal to 95 Celsius. Describe the following events: a) [5 points ]E1E2 b) [5 points] E2 ' c) [5 points ]E1E2 d) [5 points] E2E3 e) [5 points] E1E2E3 f) [5 points] E1E2E3.