Oh, and one more: When using PAL chain the result translated the plus sign (+) into the word “plus” to explain the final answer without mentioning anything about the addition operation.

Entering new  chain...
def solution():
    'What is 2+2? Explain how you got an answer.'
    2+2 is 4. This is because 2+2 is the same as 2 plus 2, which is 4.

Finished chain.
Thomas Lodato @deptofthomas