Question: who is mowgli's main enemy in the jungle book
[{'answer': 'Shere Khan'}, {'provenance': [{'wikipedia_id': '19446259', 'title': 'List of The Jungle Book characters', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 585, 'bleu_score': 0.9146819137353851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8742728070375145434}, 'section': 'Section::::In the Mowgli stories.\n'}]}, {'provenance': [{'wikipedia_id': '13333562', 'title': "The Jungle Book: Mowgli's Story", 'section': 'Section::::Plot.\n', 'start_paragraph_id': 8, 'end_paragraph_id': 8, 'meta': {'evidence_span': ['One night, the wolf bullies team up with Shere Khan to drive Mowgli out of the pack, all believing that man does not belong in a wolf pack. During a hunt, Akela assigns groups for the hunt.', 'One night, the wolf bullies team up with Shere Khan to drive Mowgli out of the pack, all believing that man does not belong in a wolf pack. During a hunt, Akela assigns groups for the hunt. Mowgli is teamed with the wolf bullies. They cause him to ruin the hunt, making the pack go hungry. Upset, Mowgli decides to run away from the pack. The next day, Mowgli runs off with some chimpanzees to Monkey Town, for they claim a "surprise party". Unbeknown to Mowgli, the chimps have set up a plan with Shere Khan. They trap him in a wooden house, thus making him', 'One night, the wolf bullies team up with Shere Khan to drive Mowgli out of the pack, all believing that man does not belong in a wolf pack.']}}]}, {'provenance': [{'wikipedia_id': '43535930', 'title': 'The Jungle Book (franchise)', 'section': 'Section::::Animated films.:"The Jungle Book 2".\n', 'start_paragraph_id': 8, 'end_paragraph_id': 8, 'meta': {'evidence_span': ['Goodman as the voice of Baloo. Wild child Mowgli has grown fidgety with his life in the "man village", so he sneaks back to the jungle to be with his animal friends, like the beloved bear Baloo. Mowgli\'s disappearance, however, worries his family, so his girlfriend, Shanti, along with his adopted younger brother, Ranjan, journeys into the jungle to find him. But all is not well there. Mowgli\'s old foe, the fierce tiger Shere Khan, is out to get revenge on him, being more determined to kill him than ever.', "Mowgli's old foe, the fierce tiger Shere Khan, is out to get revenge on him, being more determined to kill him than ever."]}}]}]