Quien means who (spelled Quién [accent over the e] when in a question)
Está is a specific form of "is"
A question ¿Quién está? can mean "Who is here?" or "Who is there?" depending on the context.
who is eating
quien es means "who is" like someone knocking on the door "who is it?" in spanish it would be "quien es?" or also "who is this person?" - "quien es esta persona?"
Quien esta en la puerta?
'¿Quien esta?' means: Who is there?
Who's helping you
"Quien esta cerca de la puerta en la clase" translates to "Who is near the door in the classroom".
Quien means who (spelled Quién [accent over the e] when in a question) Está is a specific form of "is" A question ¿Quién está? can mean "Who is here?" or "Who is there?" depending on the context.
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con quien esta cogiendo?
you say, "quien esta en la fiesta?"
The Spanish phrase, "Quien esta por ahi" means, "Who's around there?"in English
It means, "Who is in a wheel chair?"