This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Passage: The city shares a 15-mile (24 km) border with Mexico that includes two border crossings. San Diego hosts the busiest international border crossing in the world, in the San Ysidro neighborhood at the San Ysidro Port of Entry. A second, primarily commercial border crossing operates in the Otay Mesa area; it is the largest commercial crossing on the California-Baja California border and handles the third-highest volume of trucks and dollar value of trade among all United States-Mexico land crossings. Question: Where is the next nearest commercial crossing at the border?
Otay Mesa

Passage: The Valencian economy recovered during the 18th century with the rising manufacture of woven silk and ceramic tiles. The Palau de Justícia is an example of the affluence manifested in the most prosperous times of Bourbon rule (1758–1802) during the rule of Charles III. The 18th century was the age of the Enlightenment in Europe, and its humanistic ideals influenced such men as Gregory Maians and Perez Bayer in Valencia, who maintained correspondence with the leading French and German thinkers of the time. In this atmosphere of the exaltation of ideas the Economic Society of Friends of the Country (Societat Econòmica d'Amics del País) was founded in 1776; it introduced numerous improvements in agriculture and industry and promoted various cultural, civic, and economic institutions in Valencia. Question: Who in Valencia was influenced by the age of Enlightenment's ideas?
Gregory Maians and Perez Bayer

Passage: About 80% of undergraduates and 20% of graduate students live on campus. The majority of the graduate students on campus live in one of four graduate housing complexes on campus, while all on-campus undergraduates live in one of the 29 residence halls. Because of the religious affiliation of the university, all residence halls are single-sex, with 15 male dorms and 14 female dorms. The university maintains a visiting policy (known as parietal hours) for those students who live in dormitories, specifying times when members of the opposite sex are allowed to visit other students' dorm rooms; however, all residence halls have 24-hour social spaces for students regardless of gender. Many residence halls have at least one nun and/or priest as a resident. There are no traditional social fraternities or sororities at the university, but a majority of students live in the same residence hall for all four years. Some intramural sports are based on residence hall teams, where the university offers the only non-military academy program of full-contact intramural American football. At the end of the intramural season, the championship game is played on the field in Notre Dame Stadium. Question: What amount of the graduate student body at Notre Dame live on the campus?

20%