Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Let me give you an example: Context: Architecturally, the school has a Catholic character. Atop the Main Building's gold dome is a golden statue of the Virgin Mary. Immediately in front of the Main Building and facing it, is a copper statue of Christ with arms upraised with the legend 'Venite Ad Me Omnes'. Next to the Main Building is the Basilica of the Sacred Heart. Immediately behind the basilica is the Grotto, a Marian place of prayer and reflection. It is a replica of the grotto at Lourdes, France where the Virgin Mary reputedly appeared to Saint Bernadette Soubirous in 1858. At the end of the main drive (and in a direct line that connects through 3 statues and the Gold Dome), is a simple, modern stone statue of Mary.
Question: To whom did the Virgin Mary allegedly appear in 1858 in Lourdes France?
The answer to this example can be: Saint Bernadette Soubirous
Here is why: This is the correct answer. Because the question is asking for the name of the person and following sentence from the passage answers it: It is a replica of the grotto at Lourdes, France where the Virgin Mary reputedly appeared to Saint Bernadette Soubirous in 1858.

OK. solve this:
Context: Darma (Pierre Andre) is traumatised by the mysterious death of his fiancee, Rose (Intan Ladyana) who had killed herself. Unknown to him, Rose had been haunted by a malicious spirit which they had brought to her home after picking up a small jar found washed up at the beach. Apparently, the spirit had been imprisoned and was inadvertently released by the couple.At her home, after her death, before leaving Darma had taken the small jar with him, and with it, the malignant spirit.Not satisfied with why Rose had suddenly killed herself, Darma decides to investigate the case with the help of Rose's twin sister, Seri, (also played by Intan Ladyana). As they probe into the death, a series of strange occurrences start to unravel, leaving Darma in a disturbed state of mind that affects his life and career. When he is advised to take a week's break from work, he returns to his village to rest. Unknown to him, he is only getting closer to solving his fiancee's death and the truth behind the strange happenings.It was Darma's senile grandmother who could see the ghost and had unwittingly invited the spirit into the house. In Malay belief, certain spirits cannot enter the house unless invited in. This is similar to the vampire mythology in the West. The ghost in this movie is called Saka. Saka was a ghost that has been kept by the elder for some uncertified reason. Mostly, Saka starts to give problems when it's owner die and Saka needs to be feed. Mostly, Saka will haunt the next generation of the owner.
Question: Who is Rose's twin sister?
Answer:
seri