question: The eastern and central basins of Iran experience how much annual precipitation ?
answer: less than 200 mm ( 7.9 in ) of rain
turker_answer: The eastern and central basins of Iran experience less than 200 mm ( 7.9 in ) of annual precipitation .
rule-based: The eastern and central basins of Iran experience less than 200 mm ( 7.9 in ) of rain annual precipitation .