Table:
text: First Hull Trains
Past fleet
Past fleet
Class_ Type_ Built Number_ Withdrawn
Class 170 Turbostar diesel multiple unit 1999–2004 4 2005
Class 222 Pioneer diesel multiple unit 2005 4 2009
Class 86 Electric locomotive 1965–1966 1 2008
Mark 3 Carriage Passenger Carriage 1975–1988 5 2008
Mark 3 Carriage Driving Van Trailer 1988 1 2008

Question: Which class of First Hull Trains was numbered under 4 and built in 1988?

Question: How many items taken in First Hull Trains had numbers over 5?

Question: How many numbers was the sum of the First Hull Trains that had some kind of Driving Van Trailer?