A woman wearing a colorful shawl on her head is using a sewing machine .
It is certain that a sewing machine is used by a woman wearing a colorful shawl .
It is certain that a sewing machine is used by a woman wearing a colorful shawl .
Chances are about even that a sewing machine is used by a woman wearing a colorful shawl .
A sewing machine is used by a woman wearing a colorful shawl .