this sounds greek to me...

process_datum

  def process_datum
    self.raw_data.each do |datum|
      company = Company.where(name: datum[1]).first_or_create(url: datum[2], cb_url: datum[3])
      a = datum[0].split("/").each_with_index {|e,i| e.insert(0,"20") if i == 1}.reverse.map {|e| e.to_i}
      date = Date.new(a[0], a[1])  
      event = Event.where(funding_type: datum[4], date: date, value: datum[5]).first_or_create
    end
  end