Language intelligence: refers to the use of computer programs to achieve language communication between humans and machines, or to allow machines to complete language-related tasks autonomously. Which of the following is language intelligence? ['The artificial intelligence "Alpha Dog" defeated several world-class Go masters with an absolute advantage in the man-machine battle that lasted several months.', "In order to expand the foreign market, a company's new product has set language switch buttons. With these buttons, users can switch between multilingual operating systems.", 'In a poem competition, according to the keywords spoken by the judges, the robot "Xiao Wei" wrote several poems with beautiful words and fresh mood on the spot.', 'High-speed rail, trains, and subways are equipped with a bilingual Chinese-English voice system that can automatically broadcast station names along the way, current speed, and real-time temperature.']