David Nahmad

David Nahmad is not mentioned in either of the provided news articles. The first article discusses a raffle offering a Picasso painting to raise money for Alzheimer's research. The second article details a ruling by the New York Supreme Court ordering the restitution of a Modigliani painting stolen by the Nazis to a French farmer, the grandson of the original Jewish owner. Since David Nahmad is not present in the context of these articles, it's impossible to determine his current relevance or significance based on the information provided. Therefore, I cannot provide a summary about him based on these articles.