Complex sentence: Mímameiðr (Old Norse "Mimi's tree" Simek (2007:216)) is a tree in Norse mythology, attested only in stanza 20 and 24 in the "Poetic Edda" poem "Fjölsvinnsmál".
Split into simpler sentences: Mímameiðr (Old Norse "Mimi's tree" Simek (2007:216)) is a tree in Norse mythology. It is attested in stanza 20 and 24 in the "Poetic Edda" poem "Fjölsvinnsmál".