Table: elk_mountains_peaks
Columns: rank
mountain_peak
subrange
elevation
prominence
isolation

Question: Name the Rank of Rank Mountain Peak of crested butte pb?
SQL: SELECT "rank" FROM elk_mountains_peaks WHERE "mountain_peak" = 'crested butte pb'

Question: Name the Prominence of the Mountain Peak of matchless mountain pb?
SQL: SELECT "prominence" FROM elk_mountains_peaks WHERE "mountain_peak" = 'matchless mountain pb'