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Amid geopolitical concerns, the WTI for June delivery rose 2.72 dollars, or 19.7 percent, to settle at 16.50 dollars a barrel on the NYMEX on Thursday, while Brent crude for June delivery was up 0.96 dollar, or 4.7 percent, to close at 21.33 dollars a barrel on the London ICE Futures Exchange.

Amazon’s idea is focused on the interactions between the automated drone system and the user. It includes features that would allow a user to summon the drone to their location. The drone would also be able to detect and avoid obstacles in the travel path of a user and/or tow line. “For example, when a user is snow skiing in a mountainous area, a designated travel area may be determined that avoids cliffs or other dangerous areas,” the filing notes.?The drone could even lift a user in the air.

Amid that uncertainty, one company seemed sure to suffer in the wake of the acquisition: Instacart.

Amazon’s decision to?open the digital brain up?to developers and device manufacturers in 2015 has contributed to its early lead in the competitive smart speaker race.?The?Alexa Skills Kit?encourages third-party developers to build skills for Alexa. Developers who want to add to Alexa’s abilities can write code that works with Alexa in the cloud, letting the smart assistant do the heavy lifting of understanding and deciphering spoken commands.

Among the items on show, there are dinnerware bearing the characters "Zhiyuan," a telescope bearing the name of the ship's chief officer, spoons, bowls and other items used by the crew.