Title: List of Last Tango in Halifax episodes
Passage: The first series of Last Tango In Halifax aired between 20 November and 19 December 2012. It was the UK's highest rated new mid-week television drama of 2012 and was re-commissioned for a second series. The second series aired from 19 November 2013 to 24 December 2013. The series was re-commissioned for a third series on 24 December 2013, ahead of the final episode of the second series. The third series aired from 28 December 2014 to 1 February 2015. Following the end of the final episode of series three, the BBC announced that a fourth series had been commissioned. Series 4 was broadcast on 19 and 20 December 2016.
Question: is there a season 4 last tango in halifax
Answer: yes