Translation:Grandpa always listens to Spanish music.
Every time I translate "el abuelo" or "la abuela" as "the grandfather" or "the grandmother" Duolingo counts it wrong. I assume that Spanish speakers often refer to their own grandparents using the definite article (el or la), rather than using a possessive pronoun (my). But how would a Spanish speaker refer to someone else's grandparent, if not by using the definite article? In other words, why is "the grandfather" an incorrect translation in this case?