Stray aru in an example sentence


#1

I need help with the following sentence, taken from the dictionary of intermediate japanese grammar (p262):

この びる は ある ゆうめいな けんちくか の せっけい に もとずいて たてられた

The question is, what is ある doing there? What meaning does it add, and what is its grammatical function?

Thanks!


#2

ある + a noun can be used to refer to a specific instance of something, without actually naming that instance. For example, ある日 (one day). Here, あるゆうめいなけんちくか sounds like “some famous architect” or “a famous architect.”


#3

It’s the second one on that page, 或る meaning “a certain”, not 有る meaning “exist”. Basically what SleepyOne said.

Same thing confused me at one point.