test1-out.txt

Stage 1
input tsv data has 33 rows and 5 columns
row 33 is:
   1: Year       2024
   2: Event      Table tennis
   3: Gender     Mixed
   4: Country    Malaysia
   5: Medal      third: bronze

Stage 2
sorting by "Year",
   then by "Country"
row 1 is:
   1: Year       2016
   2: Event      Cycling
   3: Gender     Womens
   4: Country    Australia
   5: Medal      second: silver
row 17 is:
   1: Year       2024
   2: Event      Diving
   3: Gender     Mens
   4: Country    China
   5: Medal      first: gold
row 33 is:
   1: Year       2024
   2: Event      Swimming
   3: Gender     Womens
   4: Country    New Zealand
   5: Medal      first: gold

Stage 3
---------------------
Year
    Country     Count
---------------------
2016
    Australia       2
    Malaysia        1
2020
    China           2
    Indonesia       3
    Malaysia        1
    New Zealand     3
2024
    Australia       3
    China           8
    Indonesia       3
    Malaysia        2
    New Zealand     5
---------------------
ta daa!