CREATE TABLE table_80106 ("Episode" CLOB, "First aired" CLOB, "Entrepreneur ( s ) " CLOB, "Company or product name" CLOB, "Money requested  ( \\u00a3 ) " CLOB, "Description of product" CLOB, "Investing Dragon ( s ) " CLOB)

When did episode 6 first air with entrepreneur Guy Portelli?
SELECT "First aired" FROM table_80106 WHERE "Episode" = 'episode 6' AND "Entrepreneur(s)" = 'guy portelli'
SELECT "First aired" FROM "table_80106" WHERE "Entrepreneur(s)" = 'guy portelli' AND "Episode" = 'episode 6'