It's a painting of a woman/girl. She's sitting on a field of grass (or maybe wheat) and her back is to us. If I recall correctly, she's looking towards a house or a barn. Or maybe a 7-11.
A family friend had it in her house and it always fascinated me as a kid. I know it's a pretty well-known piece of art, so I'm sure someone will get it quickly -and- then I'll feel really stupid for not knowing it. Thanks.