What is the name of the pentalogy which features Dedication 3 and Dedication 4?
Dedication 4 Dedication 4 is a mixtape by Lil Wayne. The mixtape was originally supposed to be released on August 15, 2012, but got pushed several times  and was released on September 3, 2012. It is the fourth installment of Lil Wayne's "Dedication" series, following its predecessors "The Dedication", "Dedication 2" and "Dedication 3". It's also the fourth installment of Lil Wayne's "Gangsta Grillz" pentalogy.
Henry IV, Part 2 Henry IV, Part 2 is a history play by William Shakespeare believed to have been written between 1596 and 1599. It is the third part of a tetralogy, preceded by "Richard II" and "Henry IV, Part 1" and succeeded by "Henry V".