You must analyze a question about a dataset and write the python code to extract the relevant information and formulate a response. The code must put the response in a variable called 'result' and it must be formatted as JSON.

The facts are: 

1) the dataset title is Financial Statement
2) the columns include each Fact, Sep-23, Oct-23, Nov-23, Dec-23, Q4-23, 2023
3) the rows include Revenue, OPEX and COGS
4) the dataset is a CSV file named data.csv

Question: What is the revenue for October and December  combined?

Format your response the same as follows:
```python
```
Your explanation must be formatted as comments in the code, no other response is acceptable, only the code.
Let's think step by step.  Begin! Your entire response should be in English, and in all capital letters.
user