Implicit advertising refers to the strategic integration of products or brands and their representative visual symbols and even service content into movies, TV shows or other TV programs and other communication content (hidden in the carrier and integrated with the carrier), so that While the audience accepts the content of the communication, they unconsciously accept the product or brand information, and then achieve the desired communication purpose of the advertiser. According to the above definitions, Which of the following are classified ads:. ['TV station reprints an advertisement for a well-known drink when it is breathing in the midfield of the World Cup football match.', 'A well-known sports brand sponsors the sportswear of a country ’s Olympic athletes.', 'An electronic product manufacturer sponsors filming and plays advertisements for the product before the movie is shown.', "A well-known female anchor of a TV station wears clothing provided by a brand to attend a relative's wedding."]