Athena competed with Poseidon to be the patron deity of Athens, which was yet unnamed, in a version of one founding myth. They agreed that each would give the Athenians one gift and that the Athenians would choose the gift they preferred. Poseidon struck the ground with his trident and a spring sprang up; this gave them a means of trade and but the water was salty and not very good for drinking. Athena, however, offered them the first domesticated olive tree. The Athenians accepted the olive tree and with it the patronage of Athena, for the olive tree brought wood, oil, and food.