Six friends, Govardan, Sarayu, Rekha, Shyamala, Hema and Ganesh, are standing in a queue at a ticket counter. There are two persons between Sarayu and Hema. Rekha is between Hema and Shyamala. Only one person is standing ahead of Govardan. Ganesh who is fourth from the back end of the row, is between Govardan and Hema. Which two persons are standing between Sarayu and Hema?