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As Echo users know, Alexa occasionally is awakened by mistake, and rudely shoves her way into conversations. There is a small chance that something useful to police might have been recorded by accident. (The chance is *really* small, because Alexa is trained to block out background noise, which presumably would even include the sound of a gruesome murder).

Armed police maintain a presence outside the Masijd Ayesha Mosque in Manurewa on March 15, 2019 in Auckland, New Zealand. [Photo/VCG]

Artificial intelligence and 5G will complement each other to function as a sound digital infrastructure for social development, and they will have a big role to play in advancing manufacturing upgrades, Qin said.

Apple dropped from last year's No 3 to the fourth place despite a 6 percent gain in annual sales, but it led the way in profits with more than billion in net income, according to the list.

Argentina's President Mauricio Macri, Brazil's President Jair Bolsonaro, Paraguay's President Mario Abdo Benitez and Uruguay's Vice President Lucia Topolansky wave as they pose for a family picture during the Mercosur trade bloc summit, in Bento Goncalves, Brazil Dec 5, 2019. [Photo/Agencies]