How many alliteratve lines does the poem, that the bar Grendel's Den references in it's name, have?
3,182
Title: Beowulf
Passage: Beowulf ( ] ) is an Old English epic poem consisting of 3,182 alliterative lines.  It may be the oldest surviving long poem in Old English and is commonly cited as one of the most important works of Old English literature.  A date of composition is a matter of contention among scholars; the only certain dating pertains to the manuscript, which was produced between 975 and 1025.  The author was an anonymous Anglo-Saxon poet, most likely from the Kingdom of Northumbria, referred to by scholars as the ""Beowulf" poet".
Title: Grendel's Den
Passage: Grendel's Den is a bar and restaurant in Harvard Square in Cambridge, Massachusetts, located at 89 Winthrop Street.  The establishment is frequented by both students and professors of Harvard University as well as many others from the Cambridge and Boston area.  The name was a reference to Grendel, the antagonist in the Old English epic poem of Beowulf.
Title: Unferð
Passage: In the Old English epic poem "Beowulf", Unferth or Hunferth is a thegn (a retainer, servant) of the Danish lord Hrothgar.  His name appears four times in the poem (always spelled Hunferð), at lines 499, 530, 1165, and 1488, as well as in line 980 by the appellation "the son of Eclafes".  The name "Unferth" does not appear in any Old English manuscript outside of the Nowell Codex, which contains "Beowulf", and the meaning of the name is disputed.  Several scholarly theories about Unferth have been proposed.  Unferth is also the name of a character in the modern novel "Grendel" by John Gardner, based upon the "Beowulf" epic.
Grendel's Den Beowulf