21.   The fire was started by a carelessly tossed cigarette.

22.   The fire was started by an electrical fault.

23.   The fire was started when a passing motorist carelessly tossed a cigarette out of his car.

24.   The kids accidentally started a fire in the garage.

25.   The wood contains sufficient natural oil to start the fire well.

26.   There have been allegations in the press that the fire was started deliberately.

27.   They went indoors to find Donald splitting wood to start the fire.

28.   It started a fire in a block of flats.

29.   Fires were started by the prisoners as a diversionary tactic.

30.   A careless camper accidentally started a fire in the woods.