Add answer for multiple participations by WMO country group
Add answers to questions 1 for ECO and CLI country groups
Reformat script output, printing answers after each question

I also added separation lines and labels for questions and answers.
Simplify request, remove one level of subqueries
List RESP authors, add to answers to question 2
Count multiple RESP participations by country group

I added answers for each of the types of country groups
WMO, ECO and CLI.
Add answer to question 1 for institutions
Rename column 'AR Participations' to 'Total AR'
Add answer for multiple RESP authors by institution
Add answer to question 1 for institution types
Add answer to question 2 for institution types
Add answer to question 1 for working groups
Add answer to question 2 for working groups

Note:
I expected 3 authors in 5+, but found only 2 in the answer.

The 3 authors are:
  * Gerald A. Meehl (5 AR in WG I)
  * Ronald J. Stouffer (4 AR in WG I, 1 AR in WG III)
  * Kevin E. Trenberth (5 AR in WG I)

Which color should Ronald J. Stouffer have in the bar chart,
in the bar for authors with 5+ AR participations?

To avoid this issue, the dimension of the bar could be based
on the total number of participations, not the total number
of authors. But this makes the chart more theoretical and harder
to comprehend.

Thus, I take note of and accept the discrepancy: the dimensions of
the bars will vary depending on the colors applied, which is due
to differences based on selected grouping.
Add answer to question 1 for countries
Replace 'multiple' with 'cumulated' or 'total' to clarify

For 'cumulated', the categories are '1+', '2+', '3+', '4+', '5+' ;
each category contains the authors of the next categories.

For 'total' on the other hand, each category is exclusive,
each matches a single total: '1', '2', '3', '4', '5'.
Add answer to question 2 for countries
Add first answer to question 3: the list of bridge authors

For each author, I also indicated the total number of working
groups and the name of the cumulated working group.
Add answer to question 3 for countries
Add answer to question 3 for institutions
Add answer to question 3 for country groups