Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_70874 ( "Year" real, "Stage" real, "Category" real, "Start" text, "Finish" text, "Leader at the summit" text )

### Question ###
What was the earliest year that had a start of Saint-Gaudens and a stage smaller than 15?

### Accurate SQL ###

SELECT MIN("Year") FROM table_70874 WHERE "Start" = 'saint-gaudens' AND "Stage" < '15'