Sohgaura is not a Harappan site and is situated in Uttar Pradesh. It is famous for its copper inscription written in Prakrit in the Brahmi script. It belongs to the Mahajanapad and Mauryan periods. All the other three are Harappan sites. Chanhudaro in Sindh, Pakistan, Kot Diji in Sindh, Pakistan, Desalpur in Gujarat, India.