Final answer:
The sentence is grammatically incorrect. The correct sentence should be: Il y a une banque au coin. In French, the verb 'être' is not used to indicate location.
Step-by-step explanation:
The sentence is grammatically incorrect. The correct sentence should be: Il y a une banque au coin. The placement of the verb 'être' (est) is incorrect in this sentence. In French, the verb 'être' is not used to indicate the location of something. Instead, we use the preposition 'à' to show the position or location of something.
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