Please answer the following question: Information:  - Ciudad Juárez (; "Juarez City") is the largest city in the Mexican state of Chihuahua. Commonly referred to by locals as simply Juárez, and known as Paso del Norte ("Pass of the North") until 1888, Juárez is the seat of the municipality of Juárez with an estimated population of 1.5 million people. The city lies on the Rio Grande (Río Bravo del Norte), south of El Paso, Texas. Together with the surrounding areas the cities form El PasoJuárez, the second largest bi-national metropolitan area on the MexicoUnited States border (after San DiegoTijuana), with a combined population of over 2.7 million people.  - San DiegoTijuana is an international metropolitan conurbation, straddling the border of the adjacent North American coastal cities of San Diego, California, United States and Tijuana, Baja California, Mexico. The 2012 population of the region was 4,922,723, making it the largest bi-national conurbation shared between the United States and Mexico, the second-largest shared between the US and another country (after Detroit-Windsor), and the fourth largest in the world. In its entirety, the region consists of San Diego County in the United States and the municipalities of Tijuana, Rosarito Beach, and Tecate in Mexico. It is the third most populous region in the California-Baja California region, smaller only than the metropolitan areas of Greater Los Angeles and the San Francisco Bay Area.  - The MexicoUnited States border is an international border separating Mexico and the United States, from California in the west to Texas in the east. The border traverses a variety of terrains, ranging from major urban areas to uninhabitable deserts, and is the most frequently crossed in the world, with approximately 350 million legal crossings annually (2010).  - Abdul Latif Sharif ( 1947 -- June 1 , 2006 ) , was an Egyptian chemist and chief suspect in the Juárez killings , a decade - long murder spree that began in the Mexican city of Ciudad Juárez in the early 1990s . Sharif immigrated to the United States in 1970 to work as a high - paid research chemist for a series of U.S. companies , some of which are alleged to have shielded him from persistent accusations of rape and murder . Jailed for 12 years for rape in 1984 , Sharif was released early for good behaviour in 1989 , committed another rape , and fled to Ciudad Juárez , Chihuahua , to escape a deportation hearing in El Paso , Texas . After the bodies of young women began to turn up in the desert surrounding Juárez , Sharif was arrested and imprisoned , serving a 60 - year sentence for murder in a maximum - security jail in the state capital of Chihuahua , Chihuahua , where he eventually died of natural causes in a local hospital . The murders have continued since Sharif 's imprisonment and death .    What object entity has the relation of 'country of citizenship' with the subject 'abdul latif sharif'?   Choices: - american  - mexico
Answer:
mexico