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_70240 ( "Stage" text, "Winner" text, "General classification" text, "Points classification" text, "Mountains classification" text, "Young rider classification" text, "Intergiro classification" text, "Trofeo Fast Team" text )

### Question ###
Who was the winner when the General classification was held by Miguel Indurain, the Points classification held by Mario Cipollini, the Mountains classification held by Claudio Chiappucci, and the Young RIder classification held by Pavel Tonkov?

### Accurate SQL ###

SELECT "Winner" FROM table_70240 WHERE "General classification" = 'miguel indurain' AND "Points classification" = 'mario cipollini' AND "Mountains classification" = 'claudio chiappucci' AND "Young rider classification" = 'pavel tonkov'