. . . "Challenger 2"@en . "Details of this model of machines history required. - Can you help add any details and build the Wiki ?"@en . . . . "Fowler"@en . . . . "tracked"@en . . "Leeds, England"@en . "Water"@en . . "No"@en . "Details of this model of machines history required. - Can you help add any details and build the Wiki ?"@en . "Fowler"@en . "Fowler Challenger 22"@en . "Diesel"@en . "4"^^ . "Fowler Challenger 22"@en . "An immaculate restored Fowler Challenger 22 on display at Bedfordshire Steam and Country Fayre 2016"@en . . "250"^^ .