Question: element named after fictional planet from which superman came
[{'answer': 'Kryptonite'}, {'provenance': [{'wikipedia_id': '28381', 'title': 'Superman', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11556642650089732233}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2117452', 'title': 'Superman: Birthright', 'section': 'Section::::Plot.\n', 'start_paragraph_id': 14, 'end_paragraph_id': 14, 'meta': {'evidence_span': ['Realizing he has made an enemy in Lex Luthor, Clark looks back on his childhood in Smallville when a young Lex arrived in town. Lex was a quiet genius, but his intelligence alienated him from everyone around him. Lex\'s parents were unloving and ruthlessly trained him to become the next Einstein. Clark muses that "they were underestimating him". Despite his contemptuous exterior, Lex warmed to Clark when he discovered they shared a common interest: astronomy. Unfortunately, Lex was so "fundamentally disturbed" that he started spending increasing amounts of time locked in his makeshift laboratory next to the Luthor mansion. During one of these periods of seclusion, Clark visited Lex, who allowed Clark inside to unveil his new invention, a sub-space communicator. Lex hoped that with a piece of meteor rock (Kryptonite), he would finally be able to open a wormhole into visions from an alien civilization. While aware of the radiation emanating from the rock, Lex assured Clark that it was perfectly harmless. Clark, stricken with sudden pain, staggered back looking ghastly; he was experiencing his first bout of Kryptonite poisoning. Lex misread Clark\'s expression and believed he had become afraid of him like everyone else. Dismissing him from the lab and commencing with his experiment, he managed to open a portal into events and times of the planet Krypton for a moment, but his generator overloaded and exploded, engulfing the house in flames. Lex, his hair burned off, staggered through the flames to uncover the piece of Kryptonite that was integral to his machine. He neglected his father, who was buried beneath rubble and burning alive. In the present day, Lex begins piecing together instruments to recreate his failed experiment from long ago in the bowels of the research facility, hoping to retrieve the alien visions he saw before. As expected, the Kryptonite creates a wormhole and Luthor is greeted with a wealth of visions from the history of Krypton.', 'Kryptonite']}}]}, {'provenance': [{'wikipedia_id': '17390', 'title': 'Kryptonite', 'section': 'Section::::Origin.\n', 'start_paragraph_id': 4, 'end_paragraph_id': 4, 'meta': {'evidence_span': ['This provided an easy explanation for how kryptonite found its way to Earth. Kryptonite was incorporated into the comic mythos with "Superman" #61 (November 1949).', 'The mineral known as kryptonite was introduced in the radio serial "The Adventures of Superman", in the story "The Meteor from Krypton", broadcast in June 1943. An apocryphal story claims that kryptonite was introduced to give Superman\'s voice actor, Bud Collyer, the possibility to take a vacation at a time when the radio serial was performed live. In an episode where Collyer would not be present to perform, Superman would be incapacitated by kryptonite, and a substitute voice actor would make groaning sounds. This tale was recounted by Julius Schwartz in his memoir. However, the historian Michael J. Hayde disputes this: in "The Meteor From Krypton", Superman is never exposed to kryptonite. If kryptonite allowed Collyer to take vacations, that was a fringe benefit discovered later. More likely, kryptonite was introduced as a plot device for Superman to discover his origin. In the radio serial, Krypton was located in the same solar system as Earth, in the same orbit, but on the opposite side of the Sun. This provided an easy explanation for how kryptonite found its way to Earth. Kryptonite was incorporated into the comic mythos with "Superman" #61 (November 1949). Editor Dorothy', 'kryptonite']}}]}, {'provenance': [{'wikipedia_id': '20451831', 'title': 'Superman: Secret Origin', 'section': 'Section::::Plot.\n', 'start_paragraph_id': 5, 'end_paragraph_id': 5, 'meta': {'evidence_span': ['After Clark becomes weak and almost damages the Kryptonite, a tornado appears without warning and he rescues Lana while learning he can fly.', 'While playing football, a young Clark Kent accidentally breaks Pete Ross\'s arm. The next day, Clark panics when he discovers x-ray vision and nearly burns his school down with his heat vision upon kissing Lana Lang. Clark\'s parents Jonathan and Martha Kent realize it is time and they show him the rocket that brought him to Earth. The rocket reveals a holograph of Jor-El and Lara, who tell him about themselves and the planet Krypton, and that he is not one of "them." Elsewhere in Smallville, a young Lex Luthor discovers a chunk of Kryptonite and takes it to a street fair the next morning where he is selling his stuff. There he meets Clark, who is now wearing glasses. After Clark becomes weak and almost damages the Kryptonite, a tornado appears without warning and he rescues Lana while learning he can fly.', 'Kryptonite']}}]}]