Please answer the following question about this movie plot. If it's un-answerable, please output "No answer".  Question: Who announce their love for each other and decide to marry? Movie plot title: Anna Karenina Movie plot: Tragic Anna Karenina (Russian: Â«ÐÐ½Ð½Ð° ÐÐ°ÑÐµÐ½Ð¸Ð½Ð°Â»; Russian pronunciation:Â [ËanËÉ kÉËrÊ²enÊ²ÉªnÉ])[1] leaves her cold husband for the dashing Count Vronsky in 19th-century Russia. The unfortunate series of events leave her hopelessly depressed.
The answer to this question is:
Anna and Count Vronsky