[KarlInOhio]

They were very strict in that particular category. One contestant named the CITY where the Sagrada Familia was located (Barcelona) and lost to the other who said “SPAIN”.

The category was explained as requiring the country. One contestant had to correct himself from California to the United States to avoid a wrong answer.

On j-archive.com this is listed on Curch of the Nativity question:

(Katie: What is Palestine?)

(Alex: No.)

[NOTE: Katie's score displayed $4,600 at the end of the round after being ruled incorrect and $4,800 at the beginning of the next round, with no explanation. This clue caused a break in taping for judges' deliberation in which compliance officials were involved. A replacement clue, which Jack got correct, was played and recorded, but not included in the aired edit of the show.]

[left that other site]

The category was explained as requiring the country. One contestant had to correct himself from California to the United States to avoid a wrong answer.

Indeed. I saw that.