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 people ( People_ID int, Name text, Height real, Weight real, Date_of_Birth text )
TABLE: CREATE TABLE entrepreneur ( Entrepreneur_ID int, People_ID int, Company text, Money_Requested real, Investor text )

### Question ###
What are the dates of birth of entrepreneurs with investor 'Simon Woodroffe' or 'Peter Jones', and count them by a line chart

### Accurate SQL ###

SELECT Date_of_Birth, COUNT(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"