Input: Article: The events of the summer of 1974 dominate the politics on the island, as well as Greco-Turkish relations. Around 150,000 settlers from Turkey are believed to be living in the northmany of whom were forced from Turkey by the Turkish governmentin violation of the Geneva Convention and various UN resolutions. Following the invasion and the capture of its northern territory by Turkish troops, the Republic of Cyprus announced that all of its ports of entry in the north were closed, as they were effectively not under its control.[citation needed]

Now answer this question: What happened to ports on Cyprus after capture of its northern territory by Turkish troops?

Output: all of its ports of entry in the north were closed

Input: Article: Groups share a fundamental kinship with the notion of symmetry. For example, a symmetry group encodes symmetry features of a geometrical object: the group consists of the set of transformations that leave the object unchanged and the operation of combining two such transformations by performing one after the other. Lie groups are the symmetry groups used in the Standard Model of particle physics; Point groups are used to help understand symmetry phenomena in molecular chemistry; and Poincare groups can express the physical symmetry underlying special relativity.

Now answer this question: What groups are are utilized toward comprehending symmetry wonders in chemistry?

Output: Point groups

Input: Article: David Archuleta's performance of John Lennon's "Imagine" was considered by many as one of the best of the season. Jennifer Lopez, who was brought in as a judge in season ten, called it a beautiful song-moment that she will never forget. Jason Castro's semi-final performance of "Hallelujah" also received considerable attention, and it propelled Jeff Buckley's version of the song to the top of the Billboard digital song chart. This was the first season in which contestants' recordings were released onto iTunes after their performances, and although sales information was not released so as not to prejudice the contest, leaked information indicated that contestants' songs frequently reached the top of iTunes sales charts.

Now answer this question: Whose recording of Hallelujah became successful again after being performed on American Idol?

Output:
Jeff Buckley