| Открытая улыбка девушки его покорила. | The girl's open smile won his heart. |
| После этих слов его улыбка исчезла. | His smile disappeared after he heard those words. |
NB When the word улыбка functions as a subject and does not have a descriptive modifier, the construction улыбка у + Genitive is often preferred to (a) and (b), above: | |
| Улыбка у девушки была открытая и добрая. | The girl's smile was open and kind. |