Question regarding Grammatical Gender vs. Biological Gender in Russian

[Emily Saunders]

Hello,

I thought I'd throw this question out to the SEELANGS wealth of  
expertise.  Masculine nouns occasionally end in -a or -я in names like  
Ваня, Миша, and in words like дедушка, папа, дядя.  And necessarily  
these take feminine declensional endings in spite of the underlying  
biological masculine gender.  My question is whether anyone can think  
of any *inanimate* masculine nouns that end in -a/-я (if there are any)?

Thanks in advance,

Emily Saunders

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