I may be wrong, But I think it's Dublin,Ireland
The 7 deadly sins are as follows: envy, pride, sloth, anger, greed, gluttony and lust. They connect to "an inspector calls" because each of the characters represents one or more of these sins. For example Mr birding is greed because he is always in search for more money.
Sentences with first an dependence clause then followed by independent clauses. But it may vary.