Erin Bria
"Quien es Santos?"
"Whose car is it?"
Whose birthday is it.
Su hija es hermosa* como usted * Feminine gender, for daughter.
Whose is the book? or Who does the book belong to? or To whom does the book belong?
it means: it's (she's) the daughter.
To answer "De quién es?" (Whose is it?), you can respond by saying the owner's name or simply stating "es mío" (It's mine) or "es tuyo" (It's yours) depending on the context.
es she is, I nfact she is the daughter of al capone
Son in law is male related to you by marrying your daughter.
daughter
it means: she's Pablo's daughter.
You can say "Mi hija es muy hermosa".