Table:
text: New Series Adventures
Original audiobooks
Original audiobooks
_ Title Author Doctor Featuring Read_by Published ISBN
19 The Empty House Simon Guerrier 11th Amy Pond & Rory Williams Raquel Cassidy 6 September 2012 ISBN 978-1-4084-6882-1
20 The Sleepers in the Dust Darren Jones 11th Amy Pond & Rory Williams Arthur Darvill 1 November 2012 ISBN 978-1-4458-9173-6

Question: What is the number of The Empty House New Series Adventures audiobooks in the list under Original audiobooks?