Read the text and determine if the sentence is true:

The Battle of Maldon is the name given to an Old English poem of uncertain date celebrating the real Battle of Maldon of 991, at which the Anglo-Saxons failed to prevent a Viking invasion. Only 325 lines of the poem are extant; both the beginning and the ending are lost.

Sentence: The poem's beginning and ending are lost, but had existed for long time after it was written.
It's impossible to say