Table: miss_universe_results
Columns: rank
country
miss_universe
1st_runner_up
2nd_runner_up
3rd_runner_up
4th_runner_up
semifinalists
total

Question: What is the lowest rank for puerto rico?
SQL: SELECT MIN("rank") FROM miss_universe_results WHERE "country" = 'Puerto Rico'

Question: What is the highest rank for the country with 6 2nd runner ups?
SQL: SELECT MAX("rank") FROM miss_universe_results WHERE "2nd_runner_up" = 6