Complex sentence: The "Hárbarðsljóð" (also spelt Harbarthsljoth and variations on this) is a flyting poem of Norse mythology in which the deities Odin and Thor compete with each other.
Split into simpler sentences: The "Hárbarðsljóð" (also spelt Harbarsthljoth and variations on this) is a flyting poem of Norse mythology. In this poem the deities Odin and Thor compete with each other.