local lastDistrictKey

function getCurrentDistrictKey(element)
    for k, v in ipairs(district) do
        if v == element then
            return k
        end
    end
    return false
end

function outputDistrictName()
    lastDistrictKey = getCurrentDistrictKey(source)
    outputChatBox("" .. districts[lastDistrictKey][5] .. ".")
end
addEventHandler("onClientColShapeHit", colShape, outputDistrictName)