Talent chain: Refers to the phenomenon of talents with the same talent continuously appearing. There are two types of talent chains. One is called the master and apprentice talent chain. The other is the blood type (also known as a family) talent chain. Which of the following belong to the talent chain? ["The survey found that the key positions of a company are equipped with relatives of the company's senior management, and some of them do not have professional talents.", 'The employment standard of a group is "to be ambitious and tough," and the group has already recruited a number of different types of outstanding talents.', 'An enterprise recruits software graduate students this year. So far, more than 70 young talents with great potential have joined the company.', 'The family of the Zhang family of the Jiangnan family is rigorous, and famous writers have appeared in successive generations.']