Table: banknote_details
Columns: value
dimensions
main_color
obverse
reverse
watermark
date_of_issue

Question: What are the dimensions of the coin worth ₩200?
SQL: SELECT "dimensions" FROM banknote_details WHERE "value" = '₩200'

Question: How many different dates of issue are the for the coin with kumsusan memorial palace on the obverse?
SQL: SELECT COUNT("date_of_issue") FROM banknote_details WHERE "obverse" = 'Kumsusan Memorial Palace'

Question: What are the dimensions of the coin issued in 1992 with kim il-sung on the obverse?
SQL: SELECT "dimensions" FROM banknote_details WHERE "obverse" = 'Kim Il-sung' AND "date_of_issue" = '1992'

Question: What is on the reverse side of the ₩500 coin?
SQL: SELECT "reverse" FROM banknote_details WHERE "value" = '₩500'

Question: What is on the reverse side of the ₩100 coin?
SQL: SELECT "reverse" FROM banknote_details WHERE "value" = '₩100'

Question: What are the dimensions of the coin with western sea barrage and locks at taedong gang on the reverse side?
SQL: SELECT "dimensions" FROM banknote_details WHERE "reverse" = 'Western sea barrage and locks at Taedong Gang'