sentence: A man is demonstrating how to kindle a small pit of fire. sentence:  First, the man shows off the flint he has for the fire. sentence:  He then puts the flint into a pile of wood. sentence:  The man then lights the fire, which slowly spreads throughout the wood. sentence:  The man then pokes the fire with pieces of flat wood to spread the fire. sentence:  The man then shakes the twigs on the wood to further spread the fire.