Implement a function to generate text given a prompt. **Example:** Given the prompt 'Hello, my name is', the function should generate a sentence. **Constraints:** The function should use a pre-trained language model and the input prompt should be a string.
Test Cases
Test Case 1
Input:
'Hello, my name is'Expected:
JohnTest Case 2
Input:
'I love to'Expected:
eat+ 3 hidden test cases