Commercial bribery refers to the use of a business bribe to provide a transaction partner, its staff or their agents with This kind of interest, so as to realize the unfair competition behavior of the transaction. Based on the above definitions, which of the following is non-commercial bribes? ['In order to encourage tour guides to guide tourists from other places to their shopping malls, a shop owner stipulates that if a tour guide leads tourists to a shopping mall, the tour guide and driver will be paid a certain amount of "guide shopping fee" according to the number of tourists.', 'In March 2004, Merck (MSD), one of the world\'s top 500 companies, fired more than 20 deputy regional managers and medical representatives in China on the grounds that "reimbursement of entertainment expenses in the name of academic promotion" for customers or partners.', 'Lucent dismisses its China President Qi Daoxie, Chief Operating Officer Guan Hurd and Treasurer and Marketing Manager on the grounds that they offer rebates to partners.', "A school presented a box of awesome gifts to alumni and VIPs who came to the school's 60th anniversary celebration event and invited them to a hearty lunch."]