Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) -- The discovery of a "sophisticated" tunnel between a Mexican eat-in kitchen and two Southern California warehouses led authorities on both sides of the U.S.-Mexico border to arrest at least nine suspects and seize between 20 and 30 tons of marijuana. The Thanksgiving Day find followed an eight-month investigation and came about three weeks after authorities discovered a similar drug tunnel in another warehouse in the Otay Mesa area of San Diego. Between the two incidents, agents in the United States and Mexico seized roughly the equivalent of one marijuana cigarette for each of California's nearly 37 million residents, Drug Enforcement Administration special agent Ralph Partridge said Friday.NEW: Authorities describe a "very sophisticated" drug smuggling tunnelNEW: The tunnel was between a Tijuana eat-in kitchen and two San Diego warehousesNEW: Two people have been arrested in the United States, and at least seven in MexicoThe tunnel is in the same area where agents found another this month 
 Question:Its southern entry was in the kitchen of a stucco _, Mexico, home, which had a garage attached big enough for tractor-trailer trucks.

Tijuana