NUMBER@1 late April or early May NUMBER@2 -RRB- , formally PERSON@1 was MISC@1 Emperor from NUMBER@3 to NUMBER@2 .

PERSON@2 -LRB- c. NUMBER@4 -- NUMBER@5 May NUMBER@2 -RRB- , formally PERSON@1 was MISC@1 Emperor from NUMBER@3 to NUMBER@2 .
