anchor: The cistern measures 140 metres (460 feet) by 70 metres (230 feet); its vaulted brick roof is supported by a forest of columns topped by Corinthian capitals, 336 in all, set in 12 rows of 28.
positive: The cistern's roof is held up by a multitude of columns.
negative: The cistern's brick roof is held up by exactly 144 columns.