A woman in a light blue shirt with white sleeves cuts a watermelon .
It is certain that a woman is cutting a potato while wearing a red tank top with no sleeves .
It is impossible that a woman is cutting a potato while wearing a red tank top with no sleeves .
It is certain that a woman is cutting a potato while wearing a red tank top with no sleeves .
A woman is cutting a potato while wearing a red tank top with no sleeves .