ADJ.
unaware
VERB + AUTHORSHIP
claimed
AUTHORSHIP + NOUN
essay
noun
The quality or state of being an author; the function or dignity of an author.
The source; the origin; the origination.
We are unaware of the authorship of this book.
noun — the act of initiating a new idea or theory or writing
noun — the act of creating written works
This student claimed authorship of an essay she clearly did not write.