Question: What was the date of the inauguration in the row with an entry of Lifespan in the Lifespan column?
SQL: SELECT "Date of inauguration" FROM "2-18596194-1" WHERE "Lifespan" = 'Lifespan';

Question: What was the date of death entry in the row that has a Date of inauguration entry of Date of inauguration?
SQL: SELECT "Date of death" FROM "2-18596194-1" WHERE "Date of inauguration" = 'Date of inauguration';

Question: What is the length of retirement for president Sharma, Shankar Shankar Dayal Sharma?
SQL: SELECT "Length of retirement" FROM "2-18596194-1" WHERE "President" = 'Sharma, Shankar Shankar Dayal Sharma';