Four-year-old Anna Hays Polk did not hesitate when asked why she wanted to host a lemonade stand in her front yard Wednesday.“To help Silas,” she said.On Wednesday, Anna Hays, with help from friends and family, hosted a lemonade stand in her neighborhood, Hunters Pointe, to help out a friend she met in the hospital while undergoing treatment for leukemia. Silas has a rare form of liver cancer, and has been receiving treatment in Savannah. “He is just a very special little boy, and we would love to help their family in any way we can,” said Jody Polk, Anna Hays’ mother.