question: What area is under sea level ?
answer: in the north ( part of the Fergana Valley ) , and in the southern Kofarnihon and Vakhsh river valleys
turker_answer: The north ( part of the Fergana Valley ) area and in the southern Kofarnihon and Vakhsh river valleys are under sea level .
rule-based: In the north ( part of the Fergana Valley ) , and in the southern Kofarnihon and Vakhsh river valleys is under sea level .