Table:
text: List of Olympic medalists in athletics (men)
Men's events
Pole vault
Rank_ Athlete Nation Olympics Gold Silver Bronze Totalmin_2_medals
1 Bob Richards Category:Articles with hCards United States (USA) 1948–1956 2 0 1 3
2 Bob Seagren Category:Articles with hCards United States (USA) 1968–1972 1 1 0 2
2 Tadeusz Ślusarski Category:Articles with hCards Poland (POL) 1976–1980 1 1 0 2
4 Wolfgang Nordwig Category:Articles with hCards East Germany (GDR) 1968–1972 1 0 1 2
4 Maksim Tarasov Category:Articles with hCards Russia (RUS) 1992–2000 1 0 1 2
6 Shuhei Nishida Category:Articles with hCards Japan (JPN) 1932–1936 0 2 0 2

Question: How many times has a nation been counted where the athlete is category Shuhei Nishida: Articles with hcards for list of Olympic medalists in athletics (men) in men's pole vault?

Question: How many silver medals have the Olympic champions in track and field (men) won the fewest in the pole vault?