an Entity references as follows:
Papyrus Oxyrhynchus 4 (P. Oxy. 4) is a fragment of a Christian theological work in Greek. It was discovered by Grenfell and Hunt in 1897 in Oxyrhynchus. The fragment is dated to the early 4th century. It is housed in the library of the University of Cambridge. The text was published by Grenfell and Hunt in 1898.