This is the 7782nd most frequent Russian word.
инна
"Инна" is a Russian female given name.
Here, 'Инна' identifies a specific individual who will participate in the mentioned event.
На этом мероприятии будет присутствовать Инна.
Inna will be present at this event.
Again, 'Инна' refers to a specific person's name, used in the accusative case to indicate the direct object of the action.
Я видел Инну в городе вчера.
I saw Inna in the city yesterday.
In this instance, 'Инна' is used as a proper noun, referring to a person's name.