In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
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Question: How did the pope respond to the request?, Context: Neither John nor the rebel barons seriously attempted to implement the peace accord. The rebel barons suspected that the proposed baronial council would be unacceptable to John and that he would challenge the legality of the charter; they packed the baronial council with their own hardliners and refused to demobilise their forces or surrender London as agreed. Despite his promises to the contrary, John appealed to Innocent for help, observing that the charter compromised the pope's rights under the 1213 agreement that had appointed him John's feudal lord. Innocent obliged; he declared the charter "not only shameful and demeaning, but illegal and unjust" and excommunicated the rebel barons. The failure of the agreement led rapidly to the First Barons' War.

Answer: obliged

Question: Who initiates shipping?, Context: The States General of the United Provinces were in control of the Dutch East India Company (VOC) and the Dutch West India Company (WIC), but some shipping expeditions were initiated by some of the provinces, mostly Holland and/or Zeeland.

Answer: some of the provinces

Question: Why is United Air relevant to the train lines for Amtrak?, Context: Union Station is further served by four Amtrak lines: the Northeast Regional and the high-speed Acela Express provide service to New York, Washington, D.C. and Boston, and rank as the first and second busiest routes in the country; the New HavenSpringfield Line provides service to Hartford and Springfield, Massachusetts; and the Vermonter provides service to both Washington, D.C., and Vermont, 15 miles (24 km) from the Canadian border. Amtrak also codeshares with United Airlines for travel to any airport serviced by United Airlines, via Newark Airport (EWR) originating from or terminating at Union Station, (IATA: ZVE).

Answer:
Amtrak also codeshares with United Airlines