Write the right answer to the question based on the context passage.

Example input: Television drama's whole point is to bring you through an often slow start, followed by a complex development to a point where there are two or three potential denouements before, "Cut!", it is the end of the episode and you will have to await the "right answer" in the following week's show.
This post came to me at 10pm last night, on Day 16 of this challenge, after a day of holidaying in London and with my head (and feet) too weary to put finger to touchscreen.
Mrs Mc and I had just watched another live instalment of Broadchurch, murder mystery extraordinaire, particularly since in the second series there is no actual fresh murder to investigate. The verdict is about to be given on the accused killer from Series 1 when the inevitable happens... Cue title music.
This moment has even gained a moniker in British homes, based on the theme tune to the real masters of the four-times-a-week cliffhanger, London-based soap opera Eastenders. It's call a "ba...ba...ba...ba, ba, ba-ba-ba-ba" (YouTube will provide overseas readers with auditory explanation).
Eastenders is such a master of writing in the perfect pace that every 28 minute episode ends with a tantalising screen freeze on the latest shocked face / smirking baddy / confused victim. For really big stories the cliffhanger can last significantly longer. This week, to celebrate the show's 30 year birthday, we will finally find out the answer to a question unanswered for the past 14 months: "Who killed Lucy Beale?"
Now, most classrooms do not involve murder, incest, dodgy deals and danger, but "good teaching" encourages a type of pacing that totally ignores the ingredients that have millions in the edges of their seats every day: the good old cliffhanger. In fact, we see teachers giving away the punchline at the beginning: "Today we are learning this:...". Question: What was the soap opera admired by British people that the author says is a master of writing?
Example output: Eastenders
Example explanation: The seventh sentence of the passage clearly states that Eastenders is master of writing. So, the answer is Eastenders.
Q: Former President Barack Obama unveiled plans for his future presidential library and museum on the south side of Chicago where he raised his family and launched his political career.
The designs show a complex of modern buildings, with a library, museum and event center, plus a community garden, a children's play area and possibly an athletic field.
"What we want this to be is the world-premiere institution for training young people and leadership to make a difference in their communities, in their countries and in the world," he told the crowd that included Chicago Mayor Rahm Emanuel, his one-time chief of staff.
Flanked by drawings and renderings, Obama also announced that he and former first lady Michelle Obama will be donating $2 million to fund a Chicago summer jobs program.
The museum, the tallest of the three buildings, will hold exhibition space, public spaces, offices and education and meeting rooms, according to the Obama Foundation. The forum and library buildings are intended to be used for study and foundation programming. Obama said his foundation, which is overseeing the project, is also looking into the possibility of locating a Chicago Public Library branch on the site.
Obama said he envisioned recording studios where musicians could help young people work on music, and space for movie directors who could take on community storytelling. The center will also have exhibits with campaign memorabilia and personal artifacts.
"Let's face it, we want to see Michelle's dresses," the former president joked.
Obama also squashed any notion that the library was ever going to be elsewhere. Multiple locations in three states Illinois, New York and Hawaii had initially pitched proposals.
"The best things that have happened to me in my life happened in this community," he said. "Although we had a formal bidding process to determine where the presidential library was going to be, the fact of the matter was it had to be right here on the south side of Chicago." Question: Who announced the building of a presidential library in Chicago?
A:
Former president Barack Obama.