Question: Was San Antonio the site of a major battle in the 19th century?, Answer:Yes, Description of San Antonio: City in Texas, United States, Fact1: The Alamo is located in San Antonio., Fact2: The Alamo was the site of a major battle during the Texan Revolution against Mexico in 1836.
Step1: Where did the most notable battle during the Texas Revolution take place?, Step2: Is #1 located in San Antonio in present day US?, Step3: Did the Texas revolution happen during the 19th century?, Step4: Are #2 and #3 positive?, Wikipedia page for step 1: Texas Revolution, Wikipedia page for step 2: Alamo Mission in San Antonio, Wikipedia page for step 3: Texas Revolution, Wikipedia page for step 4: , not_definitive_answer: False, incorrect_answer: False