Question: Grenfell is near the town in what region of New South Wales?

Context paragraphs:
Iandra Castle: Iandra (colloquially known as Iandra Castle) is a large homestead 11 km south of Greenethorpe, New South Wales in the Weddin Shire, surrounded by the townships of Cowra (41 km to the northeast), Grenfell (29 km to the northwest) and Young (26 km to the south).  It has a New South Wales heritage listing.

The Henry Lawson Festival: The Henry Lawson Festival is an arts festival held annually on the June long weekend in Grenfell, New South Wales, a town in the central west New South Wales, Australia—the birthplace of Henry Lawson, one of Australia's best loved poets and writer of short stories.  The Festival is one of the longest running arts events in NSW and 2017 sees it celebrate its 60th year.  It will also see the town celebrate Henry Lawson's 150th birthday, 17 June.

Grenfell, New South Wales: Grenfell is a town in Weddin Shire in the Central West of New South Wales, Australia.  It is 370 kilometres west of Sydney.  It is close to Forbes, Cowra and Young.  At the 2011 census, Grenfell had a population of 1,996.  The town is served daily by connecting NSW TrainLink services from Sydney via Bathurst and Lithgow.  Grenfell is approximately 5 hours from Sydney and 2 1/2 hours from Canberra.

New South Wales wine: New South Wales wine is Australian wine produced in New South Wales, Australia.  New South Wales is Australia's most populous state and its wine consumption far outpaces the region's wine production.  The Hunter Valley, located 130 km north of Sydney, is the most well-known wine region but the majority of the state's production takes place in the Big Rivers zone-Perricoota, Riverina and along the Darling and Murray Rivers.  The wines produced from the Big Rivers zone are largely used in box wine and mass-produced wine brands such as Yellow Tail.  A large variety of grapes are grown in New South Wales, including Cabernet Sauvignon, Chardonnay, Shiraz and Sémillon.

Grenfell Record and Bland Advertiser: The Grenfell Record and Bland Advertiser is an English language newspaper published in Grenfell, New South Wales, Australia.  The newspaper has run continuously under various titles since June 1867 when it began as "The Mining Record and Grenfell General Advertiser".

Electoral district of Grenfell: Grenfell was an electoral district of the Legislative Assembly in the Australian state of New South Wales, created in November 1880, partly replacing Lachlan, and named after and including the Central West town of Grenfell.  It was abolished in 1904, with the downsizing of the Legislative Assembly after Federation.

Mungindi: Mungindi is a town and locality on the border of New South Wales (NSW) and Queensland, Australia.  The town is within Moree Plains Shire in New South Wales and within the Shire of Balonne in Queensland.  Within Queensland, the locality is split between the Shire of Balonne (the western part) and the Goondiwindi Region (eastern part).  It possesses a New South Wales postcode.  Mungindi sits on the Carnarvon Highway and straddles the Barwon River which is the border between New South Wales and Queensland.  At the 2011 census , Mungindi had a population of 738 on the New South Wales side.  The population on the Queensland side is now included in Thallon, which had a population, including the surrounding area, of 382.

Grenfell railway line: The Grenfell railway line is a partly closed railway line in New South Wales, Australia.  It branches from the Blayney- Demondrille line at the town of Koorawatha.  The line opened in 1901, and closed between Greenethorpe and Grenfell in 1991.

Grenfell fossil site: The Grenfell fossil site is a paleontological site of late Devonian age in the central west of New South Wales, Australia.  It was discovered in the late 1970s and lies near the town of Grenfell, some 370 km west of Sydney, and has been the subject of ongoing investigations by the Australian Museum.

Young, New South Wales: Young is a town in the South West Slopes region of New South Wales, Australia and the largest town in Hilltops Council.  At the 2011 census , Young had a population of 6,960.

Supporting paragraphs: Grenfell, New South Wales Young, New South Wales
Answer: South West Slopes