This is the 7127th most frequent Polish word.
inga
"Inga" is a female given name in Polish.
Here, 'Inga' is used as a personal name.
Inga jest bardzo sympatyczną osobą.
Inga is a very kind person.
In this context, 'Inga' again refers to a proper noun, denoting a person's name in a question.
Czy widziałeś zdjęcia z podróży, w której była Inga?
Have you seen the photos from the trip Inga went on?
In this sentence, 'Inga' is used as a proper noun to express a hypothetical scenario in a conditional sentence.