Step 1: Select rows where 'surface' is 'clay'.
outcome |
date |
tournament |
surface |
opponent |
score |
runner - up |
2003-01-28 |
tipton |
hard (i) |
matea mezak |
6 - 4 , 4 - 6 , 4 - 6 |
winner |
2003-06-29 |
mont - de - marsan |
hard (i) |
oleksandra kravets |
6 - 4 , 6 - 2 |
runner - up |
2003-10-03 |
latina |
clay |
roberta vinci |
3 - 6 , 4 - 6 |
runner - up |
2005-11-08 |
pittsburgh |
hard |
lilia osterloh |
6 - 7 , 4 - 6 |
winner |
2006-06-06 |
cuneo , italy |
clay |
alice canepa |
6 - 1 , 6 - 2 |
Step 2: Count the number of rows.
outcome |
date |
tournament |
surface |
opponent |
score |
runner - up |
2003-10-03 |
latina |
clay |
roberta vinci |
3 - 6 , 4 - 6 |
winner |
2006-06-06 |
cuneo , italy |
clay |
alice canepa |
6 - 1 , 6 - 2 |
Step 3: Calculate the percentage of games played on clay by dividing the count by the total number of rows in the table and multiplying by 100.
Step 4: Use a `CASE` statement to return TRUE if the calculated percentage is equal to 20, otherwise return FALSE.
Final output table:
verification_result |
FALSE |
Prediction: FALSE