Robert has a sister named Angela. Angela is married to Carlos, and they have two children named Marco and Sofia. Robert is married to Lisa and they have a son named Julian and a daughter named Isabella. How is Sofia related to Lisa and Julian? Also, can Lisa be Sofia's aunt? Respond very briefly.
Sofia is the daughter of Angela and Carlos. Angela is Robert's sister. Lisa is Robert's wife, which makes her Sofia's aunt by marriage. In relation to Julian, as Sofia's father, Carlos, is Julian's uncle by marriage (Carlos being married to Julian's paternal aunt Angela), this makes Sofia Julian's first cousin. Lisa cannot be Sofia's aunt by blood, as she is not Sofia's biological parent's sister; instead, she is her aunt through marriage to Sofia's biological uncle, Robert.