Corrected entry: When Lisa walks into the church thinking she's the gem, Mother Teresa comes and changes the word puzzle from "Regally, The Rock Gem Is Lisa" to "It's Really Maggie, Sherlock" You can see that the "s" from "Is" in the first puzzle is not used at all in the second puzzle, and the "S, H and E" from "Sherlock" was taken from the "H and E" in "The" from the first puzzle, which means they used two "s" without even using the "s" from "Is" in the first puzzle. (00:18:35)
Corrected entry: Homer and Grandpa apparently buy the pub in a drunken mistake. The previous owner says, "You sure do know a lot about Irish Real Estate Law". However, the episode is set in Northern Ireland and so any laws are those of the UK. He wouldn't make that mistake.