Question:  Spittal is a hamlet or small village in East Lothian, Scotland, UK, on the B1377, it is close to which ruined tower house castle, 2 km east of Longniddry, East Lothian, Scotland?

Context paragraphs:
Longniddry Primary School: Longniddry Primary School is located in the East Lothian village of Longniddry.  It educates around 350 pupils.  In the May 1999 inspection by Her Majesty's Inspectorate of Education most aspects of the school's performance were rated "Very Good".  In 2007 Head Teacher Ann McLanachan won the "Scottish Daily Record Award for Lifetime Achievement" after 30 years service at this school.  The Scottish Parliament Minister for Education and Young People, Cathy Jamieson visited the school in late 2002 and described its approach to literacy as "using an imaginative approach that has been developed by a range of people in the school who are part of the school team ... I want such good practice to be highlighted."  The International Union for Health Promotion and Education described Longniddry in 2005 as "one of Scotland’s active primary schools".  The school's badminton team won, for the third year running, the Mid and East Primary Schools Quaich, in February 2008.

Elphinstone Tower (East Lothian): Elphinstone Tower is a ruined 13th–15th century keep, about 4 mi south east of Tranent, East Lothian, Scotland, and 0.5 mi west of the village of Elphinstone, East Lothian.

List of places in East Lothian: The List of places in East Lothian is a list for any town, village, hamlet, castle, golf course, historic house, hill fort, lighthouse, nature reserve, reservoir, river, and other place of interest in the East Lothian council area of Scotland.

Redhouse Castle: Redhouse Castle is a ruined tower house castle, 2 km east of Longniddry, East Lothian, Scotland, UK, on the B1377, close to Spittal.  The castle designated as a scheduled monument.  It is no longer protected as a category A listed building.

Spittal, East Lothian: Spittal is a hamlet or small village in East Lothian, Scotland, UK, on the B1377, east of Longniddry, south-south-west of Aberlady and to the west of Garleton and north of Gladsmuir.  It is close to both Redhouse Castle, Gosford House and Spittal House.

Horsburgh Castle: Horsburgh Castle, also known as Horsbrugh Castle or Horsbrugh Tower, is a ruined tower house castle by the River Tweed, on the A72 road from Peebles to Galashiels, near Glentress in the Scottish Borders area of Scotland.  The ruins date from the 16th century and was built by the Horsburghs.

Polkemmet Country Park: Polkemmet Country Park is located 2 km west of the town of Whitburn in West Lothian, Scotland and is a 3 star Visitor Attraction (Visitscotland).  It is adjacent to the M8 motorway, 2 km east of the "Heart of Scotland" services at Harthill.  It was developed on the estate of Polkemmet House, a country house which was demolished in the 1960s.  The estate was bought by West Lothian District Council in 1978, and the country park was opened to the public in 1981.  The park covers 169 ha , and is managed by West Lothian Council.

Niddry Castle: Niddry Castle is a fourteenth-century tower house near Winchburgh, West Lothian, Scotland.  It is situated near the Union Canal, and between two large oil shale "bings", or waste heaps.  Historically it was known as Niddry Seton or West Niddry to distinguish it from Niddry Marischal in Midlothian and Longniddry in East Lothian.

Black Castle, East Lothian: Black Castle, East Lothian is an Iron Age hillfort with a number of defensive banks, located 5 km south-east of Gifford, East Lothian, Scotland.  It is south of the B6355 road, between Darent House and Green Castle hillfort.

Longniddry railway station: Longniddry railway station is located at the southeast corner of the village of Longniddry, East Lothian, Scotland.  The station is on the East Coast Main Line, 13+1/4 mi east of Edinburgh Waverley, and is served by stopping passenger trains on the North Berwick Line.

Supporting paragraphs: Spittal, East Lothian Redhouse Castle
Answer: Redhouse Castle