A studio will screen 14 films during the week-long National Day holiday (Monday to Sunday), including five science fiction, three police and gangster films, three martial arts films, two war films and one romance. Given the conditions, the studio shows two movies a day. (1) Except for science fiction on Thursday, two films will be shown on each of the other six days in different genres; (2) The romance will be on Sunday; (3) Science fiction and martial arts films are not scheduled on the same day; (4) Police and war films are not scheduled on the same day.
Based on the above information, which of the following two films could not be scheduled to be shown on the same day?
Science fiction and gangster movies.