Extract the answer to the question from the following context. Question: Which subfield did Pickford's group open? Context: Slack (2003) compares three groups that conducted biological research at Yale during overlapping periods between 1910 and 1970. Yale proved important as a site for this research. The leaders of these groups were Ross Granville Harrison, Grace E. Pickford, and G. Evelyn Hutchinson, and their members included both graduate students and more experienced scientists. All produced innovative research, including the opening of new subfields in embryology, endocrinology, and ecology, respectively, over a long period of time. Harrison's group is shown to have been a classic research school; Pickford's and Hutchinson's were not. Pickford's group was successful in spite of her lack of departmental or institutional position or power. Hutchinson and his graduate and postgraduate students were extremely productive, but in diverse areas of ecology rather than one focused area of research or the use of one set of research tools. Hutchinson's example shows that new models for research groups are needed, especially for those that include extensive field research.
Ans: endocrinology

Extract the answer to the question from the following context. Question: What is the process of using similar plastic to repair a disc? Context: CDs are susceptible to damage during handling and from environmental exposure. Pits are much closer to the label side of a disc, enabling defects and contaminants on the clear side to be out of focus during playback. Consequently, CDs are more likely to suffer damage on the label side of the disc. Scratches on the clear side can be repaired by refilling them with similar refractive plastic or by careful polishing. The edges of CDs are sometimes incompletely sealed, allowing gases and liquids to corrode the metal reflective layer and to interfere with the focus of the laser on the pits. The fungus Geotrichum candidum, found in Belize, has been found to consume the polycarbonate plastic and aluminium found in CDs.
Ans: refilling them with similar refractive plastic or by careful polishing

Extract the answer to the question from the following context. Question: With which institution is Rechts der Isar Hospital associated? Context: The nine largest and most renowned Technische Universitaten in Germany have formed TU9 German Institutes of Technology as community of interests. Technische Universitaten normally have faculties or departements of natural sciences and often of economics but can also have units of cultural and social sciences and arts. RWTH Aachen, TU Dresden and TU Munchen also have a faculty of medicine associated with university hospitals (Klinikum Aachen, University Hospital Dresden, Rechts der Isar Hospital).
Ans: TU Dresden

Extract the answer to the question from the following context. Question: What happened after the Super Bowl performance? Context: In January 2013, Destiny's Child released Love Songs, a compilation album of the romance-themed songs from their previous albums and a newly recorded track, "Nuclear". Beyonce performed the American national anthem singing along with a pre-recorded track at President Obama's second inauguration in Washington, D.C. The following month, Beyonce performed at the Super Bowl XLVII halftime show, held at the Mercedes-Benz Superdome in New Orleans. The performance stands as the second most tweeted about moment in history at 268,000 tweets per minute. At the 55th Annual Grammy Awards, Beyonce won for Best Traditional R&B Performance for "Love on Top". Her feature-length documentary film, Life Is But a Dream, first aired on HBO on February 16, 2013. The film, which she directed and produced herself, featured footage from her childhood, her as a mother and businesswoman, recording, rehearsing for live performances, and her return to the spotlight following Blue Ivy's birth. Its DVD release in November 2013 was accompanied by footage from the Revel Presents: Beyonce Live concerts and a new song, "God Made You Beautiful". In February 2013, Beyonce signed a global publishing agreement with Warner/Chappell Music, which would cover her future songwriting and then-upcoming studio album.
Ans: 55th Annual Grammy Awards