Possible Clues:

• Newly produced play, with Act I being exceptional
• Uncharacteristic and a dreadful pity Chelsea wingers left
• A terrible pity state of America's not representative
• Deviant from sprawling capital city ultimately needs to be accommodated
• Unusual play teeming with characters in Act I
• Strange capital with unknown content, not as you would expect
• I play-act in silly way that's unusual
• A clay pit dug out of the common
• Play 'Act I' to be cast -- that's unusual
• I play-act, badly out of character