Return the dates of birth for entrepreneurs who have either the investor Simon Woodroffe or Peter Jones.
SELECT T2.Date_of_Birth FROM entrepreneur AS T1 JOIN people AS T2 ON T1.People_ID  =  T2.People_ID WHERE T1.Investor  =  "Simon Woodroffe" OR T1.Investor  =  "Peter Jones"
dates of birth for entrepreneurs who have either investor Simon Woodroffe or Peter Jones refers to a condition WHERE Investor = 'Simon Woodroffe' OR Investor = 'Peter Jones'; JOIN operation is used to link entrepreneur and people tables based on a common key People_ID;