What type of pronoun is used in the following Snetence Under most splendid house city still to be found cellar where they store their roots as old?

The pronoun used in the sentence "Under most splendid house city still to be found cellar where they store their roots as old" is "they".

Here's why:

* Pronoun: A pronoun is a word that replaces a noun.

* "They" replaces the noun that would be the subject of the verb "store." Since the sentence doesn't explicitly state *who* stores the roots, "they" acts as a placeholder.

Important Note: This sentence is grammatically awkward and lacks a clear subject. It's likely missing context or information to make it fully understandable.