Question: Richie McDonald and Dave Williams, have which common occupation?

Context paragraphs:
Lonestar: Lonestar is an American country music group consisting of Richie McDonald (lead vocals, acoustic guitar), Michael Britt (lead guitar, background vocals), Dean Sams (keyboards, background vocals) and Keech Rainwater (drums, percussion).  Before the group's foundation in 1992, both Rainwater and Britt were members of the group Canyon.  John Rich (bass guitar, lead and background vocals) was a member until he left in 1998, and later became one half of the duo Big & Rich, as well as a Nashville songwriter and record producer.  Between 2007 and 2011, McDonald exited the band for a solo career, with former McAlyster lead singer Cody Collins replacing him until McDonald rejoined.

Anne Cochran: Anne Cochran is a singer-songwriter from Cleveland, Ohio.  She is best known as the lead touring vocalist for pianist and songwriter Jim Brickman, with whom she shared the top 5 Adult Contemporary radio format hit single "After All These Years" in 1998.  She has also released a number of solo albums, and the single "Someone Is Missing at Christmas" from her album "This is the Season" peaked at number 11 on the US Adult contemporary chart in 2005.  She has shared duets with musicians and artists such as Donny Osmond, Michael Feinstein, Collin Raye, Dave Koz, Richie McDonald, Orlagh Fallon, Tracy Silverman, Jeff Timmons, Kristy Starling, Mario Frangoulis, Wayne Brady, Michael Bolton, Linda Eder and Mark Masri.

Dave Williams (singer): David Wayne Williams (February 29, 1972 – August 14, 2002) was an American vocalist best known as the lead singer for the heavy metal band Drowning Pool.

Lonestar discography: Lonestar is an American country music band founded in 1992 by Richie McDonald, John Rich, Keech Rainwater, Michael Britt and Dean Sams.  The band has released 12 studio albums (counting two Christmas albums), seven greatest hits packages, and 37 singles. Lonestar's first five releases for BNA Records are all certified gold or higher by the RIAA, and their greatest hits album is certified platinum.  The band's highest-certified album is 1999's "Lonely Grill" at 3× Platinum.  A ninth album, "Party Heard Around the World", was released in April 2010.  This was also the first album to feature lead singer Cody Collins, who replaced McDonald in 2007.

Richie McDonald: Richard Vance "Richie" McDonald (born February 6, 1962) is an American country music singer and songwriter.  From 1992 until his departure in 2007, he was the lead singer of the group Lonestar, which recorded seven studio albums on BNA Records during his tenure as lead vocalist.  McDonald co-wrote several of the band's singles, and sang lead on all but one of them; he would rejoin the band in 2011.  Outside Lonestar, he has charted twice as a guest vocalist on others' songs, in addition to releasing two independent albums and four solo singles.

West Pennant, Nova Scotia: West Pennant is a rural community located at the head of Pennant Harbour near Sambro on the Chebucto Peninsula in the Halifax Regional Municipality Nova Scotia on Route 349 West Pennant is an old fishing community that sits on Fawson and Long Coves that open into Pennant Harbour.  There are nearby islands: Martin Island, Powers Island, and Pennant Island.  Powers Island is privately owned.  Once Mi'k Maq hunting and fishing grounds, West Pennant has been occupied by three dominant colonial families since the mid 1700s: the Marriotts, Grays, and Toughs (pronounced Took).  Just 25 minutes from Halifax, West Pennant is evolving into a suburb of Halifax with many local residents moving in from other parts of Canada and overseas.  Until the 1970s most families earned their living fishing, now most families have one or more members who work in Halifax-Dartmouth.  West Pennant is also home to cottagers.  The local corner store is Mishoo's Right Stop.  West Pennant is only a few kilometres from Crystal Crescent Beach Provincial park, a unique beach flanked with granite outcrops and white sand beaches.  West Pennant also borders Terrance Bay Wilderness area.  Local wildlife include porcupines, deer, coyotes, lynx, black bear, pheasant, partridge, bald eagles, herring gulls, osprey, beaver, moles, shrew, monarch butterfly (seasonal), raccoon, mink, muskrat, otter, harbour seals, blue jays, american goldfinch, american robin, hummingbirds (seasonal), bobcat, and possibly cougar (recolonized from Western North America), and right whale.  Fishing is a common occupation and hobby.  The dominant species caught in Pennant Harbour are Atlantic Cod, Mackerel, Boston Blue Fish, and further out, Halibut, Swordfish, and Haddock.  Squid can be caught off of the government wharf in Sambro during summer nights.  There is also a commercial fishery for lobster.  Once the poor man's food, lobster is now a local delicacy.

Mannadiar: 'Mannadiaŕ' is a Hindu Kshatriya caste, found principally in the Indian state of Kerala.  People of this community are found only spread across the district of Palakkad in Kerala.  Agriculture and Trading are the two most common occupation adopted by these community members.

Katariga: Katariga is a small community in Sagnarigu District in the Northern Region of Ghana.  It has a dispersed settlement having Kumbuyili, Sugashee and Gurugu as its neighboring communities.  Farming is the most common occupation in this community.  It is one of the few communities headed by a female(Tindana) in the Northern Region .

Kotli Sattian Tehsil: Kotli Sattian is a Tehsil (subdivision) of Rawalpindi District in the Punjab province of Pakistan.  Its name is derived from the mountain town of Kotli and the Satti tribe.  Main tribes of the area is Sattis,& other minorities khetwals, Dhanial and Bhattis.  A handsome population of Dhoond (Abbasi) Tribe dominant in Murree Tehsil also lives in many villages of the area.  Common occupation of the people of this area is agriculture and farming.  A large number of people choose to work in the armed forces of Pakistan since the British Colonial era.

Deviations Project: Deviations Project is a British electronic music group composed of producer Dave Williams and violinist Oliver Lewis.  The group blends elements of classical music with electronica; pieces such as Tchaikovsky's "Swan Lake", Bizet's "Carmen" and Bach's "Sonata in Gm" are recreated with modern music technology.  Contemporary compositions, including Dave Williams' own songs, John Williams’ "Theme From Schindler's List" and Fleetwood Mac's "Albatross" were integrated with classical works on the group's first full-length release, a self-titled LP.  They have also released the Christmas album "Adeste Fiddles" (a play on Adeste Fideles) and a second album, "Ivory Bow".

Supporting paragraphs: Richie McDonald Dave Williams (singer)
Answer: singer