A photo of a woman in a black coat standing in front of a large two-paneled photo depicting a woman in a gray dress looking down with her hand in a bag.
There are two women in the photo
woman in black and another woman in grey constitute two women
A woman in a black coat and a woman in a gray dress are two women.
There are two women because there is a woman in a coat standing and there is a woman in a dress looking down.