Question:  Ballabriggs is a retired racehorse trained in a civil parhish with a population of what at the 2011 census?

Context paragraphs:
Cholmondeley, Cheshire: Cholmondeley ( ) is a civil parish in Cheshire, England, north east of Malpas and west of Nantwich.  It includes the small settlements of Croxton Green ([ SJ552527] ) and Dowse Green ([ SJ561517] ), with a total population of a little over a hundred, increasing to 157 at the 2011 Census.  Nearby villages include Bickerton to the north east, Bulkeley to the north, Chorley to the east, No Man's Heath to the south west, and Bickley Moss to the south.

Neston: Neston is a small residential town and civil parish in the borough of Cheshire West and Chester.  It is situated on the part of the Wirral Peninsula that remains in the ceremonial county of Cheshire, England.  Parkgate is located to the north west and the villages of Little Neston and Ness to the south of the town.  At the 2001 Census the population of Neston ward was recorded as 3,521, increasing to 4,329 at the 2011 Census.  The town and civil parish also includes Little Neston; Parkgate; and Riverside wards; along with part of Burton and Ness ward, and has a population of 15,162, increasing to 15,221 in the 2011 Census.

Well, Lincolnshire: Well is a small estate village and civil parish about 1.5 mi south of the town of Alford, in the East Lindsey district of Lincolnshire, England.  The population of the civil parish was 166 at the 2011 census.  It is situated on the foot of the east entry to the Lincolnshire Wolds.  The population of 166 as at the 2011 census includes the hamlet of Claxby St. Andrew.  The village provides views of the gradually sloping hills towards the west.

Lostwithiel: Lostwithiel ( ; Cornish: Lostwydhyel ) is a civil parish and small town in Cornwall, England, United Kingdom at the head of the estuary of the River Fowey.  According to the 2001 census it had a population of 2,739, increasing to 2,899 at the 2011 census.  The Lostwithiel electoral ward had a population of 4,639 at the 2011 census.  The name Lostwithiel comes from the Cornish "lostwydhyel" which means "tail of a wooded area".

Penryn, Cornwall: Penryn ( Cornish: Pennrynn , meaning 'promontory') is a civil parish and town in Cornwall, England, United Kingdom.  It is situated on the Penryn River about 1 mi north-west of Falmouth.  The population was 7,166 in the 2001 census and a receded 6,812 in the 2011 census, a drop of more than 300 people across the ten year time gap.  There are two electoral wards covering Penryn: 'Penryn East and Mylor' and 'Penryn West'.  The total population of both wards in the 2011 census was 9,790

Allithwaite: Allithwaite is a small village in Cumbria, England, located roughly 1.2 mi west of Grange-over-Sands.  Most of its residents commute to local areas of Ulverston, Barrow-in-Furness, Kendal or Lancaster to work.  Historically in Lancashire, Allithwaite, and the village of Cartmel situated to the north, are part of the civil parish of Lower Allithwaite.  At the 2001 census, the parish had a population of 1,758, increasing to 1,831 at the 2011 Census.  There is also a civil parish called Upper Allithwaite, which includes Lindale, Low Newton and High Newton.  The population of this parish at the 2011 Census was 843.

Ballabriggs: Ballabriggs (foaled 20 April 2001) is a retired Grand National-winning National Hunt racehorse trained by Donald McCain, Jr. in Cholmondeley, Cheshire and owned by Trevor Hemmings.

Bickerstaffe: Bickerstaffe is a village and civil parish in the West Lancashire district of Lancashire, England.  According to the 2001 Census the population of the civil parish was 1,196, reducing to 1180 at the 2011 census, although the population of the electoral ward, which includes Lathom South, was slightly greater at 2,013, reducing to 1,988 at the 2011 census.

Warton, Lancaster: Warton is a village, civil parish and electoral ward in the City of Lancaster in north Lancashire in the north-west of England, close to the boundary with Cumbria, with a population of around 2,000, measured at the 2011 Census to be 2,360.  It is a village steeped in history; its earliest recording as a settlement is made in Domesday Book written in 1086.  The nearest town to Warton is Carnforth, which was originally part of Warton parish.  It has connections to the first President of the United States, George Washington: Washington's ancestor of seven generations, Lawrence Washington, is rumoured to have helped build the village church of St Oswald.  The parish covers an area in excess of 11000 acre and is predominantly rural.  The parish of Warton had a population of 2315 recorded in the 2001 census, and 2,360 in the 2011 census.

Ackworth, West Yorkshire: Ackworth is a village and civil parish in the metropolitan borough of Wakefield, West Yorkshire, England, situated between Pontefract, Barnsley and Doncaster on the small River Went.  The village consists of four parts, High Ackworth, Low Ackworth, Ackworth Moor Top, and Brackenhill.  According to the 2001 census it had a population of 6,493, increasing to 7,049 at the 2011 Census.  There is also a City of Wakefield Ward called Ackworth, North Elmsall and Upton.  At the 2011 Census this ward had a population of 16,099.

Supporting paragraphs: Ballabriggs Cholmondeley, Cheshire
Answer: 157