Table: olympic_coins
Columns: year
denomination
alloy
reverse
diameter
weight
obverse
mintage
series

Question: How much did the Modern Pentathlon III Series coin weigh?
SQL: SELECT "weight" FROM olympic_coins WHERE "series" = 'iii series' AND "reverse" = 'modern pentathlon'

Question: What is the obverse of the archery coin?
SQL: SELECT "obverse" FROM olympic_coins WHERE "reverse" = 'archery'

Question: What is the denomination of the III Series?
SQL: SELECT "denomination" FROM olympic_coins WHERE "series" = 'iii series'

Question: What is the diameter of the Archery Reverse coin?
SQL: SELECT "diameter" FROM olympic_coins WHERE "reverse" = 'archery'