Question: What is the name of this state located in northeastern and Mid-Atlantic regions of the United States, where Elektra appeared with Extreme Championship from October 1999 until April 2001?
Sentence (from "Pennsylvania"): Pennsylvania (Pennsylvania German: "Pennsylvaani" or "Pennsilfaani"), officially the Commonwealth of Pennsylvania, is a state located in the northeastern and Mid-Atlantic regions of the United States.
Relevant evidence: Yes