Alex and Ben are the sons of George, who is Carol's brother. Since Carol is Robert's wife, George is Robert's brother-in-law. This makes Alex and Ben Robert's nephews by marriage.

In relation to Sarah and Michael, George is their uncle because he is their mother's brother. Consequently, George's sons, Alex and Ben, are their first cousins. Sarah and Michael are first cousins to Alex and Ben, as they share common grandparents (Carol and George's parents).

Michael is indeed George's nephew. Since Carol is George's sister and Michael is Carol's son, the relationship between George and Michael is that of an uncle and nephew.
Robert is married to Carol, and they have two children: Sarah and Michael. Carol has a brother named George, and George has two sons: Alex and Ben. Discuss how Alex and Ben are related to Robert, Sarah, and Michael. Also, contemplate if Michael is George's nephew. Respond very briefly.