Question fixes

[wongjingping]

Fixes to the following question/query pairs as per feedback:

• count distinct pid instead of cid since question is asking for publications
• clarify question on stopovers since it wasn't clear if don't want flights from/to JFK and stops=0 or if we don't want flights from/to JFK or stops=0. Updated the query accordingly as well.
• clarify question on citing relationships

Tested with oa chat runner that it still works fine:

python main.py \
  -q data/questions_gen.csv \
  -o results/my_query_generator.csv \
  -g oa \
  -f prompts/prompt_openai.md \
  -m gpt-3.5-turbo-0613 \
  -p 5
...
Correct so far: 132/200 (66.00%): 100%|███████████████████████████████████████████████| 200/200 [00:41<00:00,  4.78it/s]
                exact_match   correct
query_category                       
date_functions     0.760000  0.760000
group_by           0.742857  0.742857
order_by           0.628571  0.714286
ratio              0.257143  0.342857
table_join         0.685714  0.714286
where              0.714286  0.714286
Average correct rate: 0.66