Table: alpe_dhuez_stages
Columns: year
stage
start_of_stage
distance_km
category_of_climb
stage_winner
nationality
yellow_jersey
bend

Question: What is the lowest stage when the yellow jersey is Ronan Pensec?
SQL: SELECT MIN("stage") FROM alpe_dhuez_stages WHERE "yellow_jersey" = 'Ronan Pensec'

Question: How many bends occur when the yellow jersey is Lance Armstrong and stage winner is Lance Armstrong?
SQL: SELECT COUNT("bend") FROM alpe_dhuez_stages WHERE "yellow_jersey" = 'Lance Armstrong' AND "stage_winner" = 'Lance Armstrong'

Question: What is every yellow jersey entry for the distance 125?
SQL: SELECT "yellow_jersey" FROM alpe_dhuez_stages WHERE "distance_km" = '125'

Question: Who is every stage winner at the distance of 162.5?
SQL: SELECT "stage_winner" FROM alpe_dhuez_stages WHERE "distance_km" = '162.5'

Question: What is the lowest entry for bend when Federico Echave is the stage winner?
SQL: SELECT MIN("bend") FROM alpe_dhuez_stages WHERE "stage_winner" = 'Federico Echave'

Question: How many entries for start of stage occur in the year 2006?
SQL: SELECT COUNT("start_of_stage") FROM alpe_dhuez_stages WHERE "year" = '2006'