Edward II is a Renaissance or Early Modern period play written by Christopher Marlowe. It is one of the earliest English history plays. The full title of the first publication is The Troublesome Reign and Lamentable Death of Edward the Second, King of England, with the Tragical Fall of Proud Mortimer.
Christopher Marlowe was not one of the earliest English history plays.
Marlowe was not a history play, but he  did write one. The system could not distinguish the difference between a play and its author/creator.
( z1 include :polarity - :ARG1 ( z2 work-of-art :name ( z3 name :op "Christopher" :op "Marlowe" ) ) :ARG2 ( z4 play :mod ( z5 history :mod ( z6 country :name ( z7 name :op "England" ) ) ) :ARG1-of ( z8 have-degree :ARG2 ( z9 early ) :ARG3 ( z10 most ) ) ) )