Given the task definition, example input & output, solve the new input case.
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input case for you: Passage: When the convention adjourned on April 13,  Austin went directly to San Antonio de Béxar to meet with Seguin.  Seguin called a series of meetings, held from May 3 to 5, for prominent locals to discuss the convention proceedings.  He was the only Béxar resident to fully support separate statehood.  Other residents suggested that the capital of Coahuila y Tejas should be moved to San Antonio de Béxar, giving Texas more power.  There was precedent for this; under Veramendi, the capital had just been moved from Saltillo to Monclova.  If the legislature rejected the move, these residents vowed to support separate statehood.A third group of residents believed that the convention, like its predecessor, was illegal.  Under their interpretation of the laws, only the state legislature would be able to petition the Mexican Congress for such a drastic change.  Austin argued that the laws really meant that no one could petition on behalf of the people unless the people had been consulted, and the convention served as that consultation.  The meetings ended with no agreement on how to proceed.  Austin wrote that "the people here agree in substance with the rest of Texas, but differ as to the manner, and will express no opinion for, nor against".Seguin declined to accompany Austin. Miller also withdrew.  Texas was in the throes of a cholera epidemic, and Miller, a physician, felt it his duty to stay and tend the sick.  Austin then visited Goliad but was unable to attract any more Tejano support.  He chose to go to Mexico City alone; he had visited several times and had established a good reputation among government officials.  Although he was warned that his reception would likely be poor, he ignored suggestions to delay his journey.
Output:
What is the last name of the person who went to Mexico City alone?