You could ask questions of anyone in a language they don't know, and they could answer it using a translation program. I'm not saying these AI programs are not impressive. I'm saying that for Google execs to say that they don't know how AI does stuff is ridiculous. If an AI program had no access to Bengali online, or a Bengali language dataset in its files, it would not know how to answer. The program is searching the internet for answers, like most of us do these days.