Best way to fine-tune Question-Answer model for different questions

Models
1

For example, we have some strings with person descriptions and address in it, and 2 questions:

  1. What is the highest rank person name?;
  2. What city?.

The first question is hard, need a labeled dataset with a decent size, for the second question it’s almost always good from the box, just a few samples to fine-tune.

So, the question is what’s the best way to finetune Question-Answer model for this case?
Possible ways:

  1. For each context from first question labeled dataset extract additionally city and create Squad-like dataset, train on dataset with both questions to same context.
  2. Fine-tune in series - first with first question dataset, then with few samples for the second question.

Which one is better?