Question: when was the mission san antonio de valero built
[{'answer': 'the 18th century', 'provenance': [{'wikipedia_id': '143087', 'title': 'Alamo Mission in San Antonio', 'start_paragraph_id': 1, 'start_character': 186, 'end_paragraph_id': 1, 'end_character': 202, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1718', 'provenance': [{'wikipedia_id': '143087', 'title': 'Alamo Mission in San Antonio', 'start_paragraph_id': 7, 'start_character': 455, 'end_paragraph_id': 7, 'end_character': 459, 'bleu_score': 1.0, 'section': 'Section::::History.:Mission.\n'}]}, {'provenance': [{'wikipedia_id': '143087', 'title': 'Alamo Mission in San Antonio', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 1326, 'bleu_score': 0.9102492680913651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16871836023374299380}, 'section': 'Section::::History.:Mission.\n'}]}, {'provenance': [{'wikipedia_id': '143087', 'title': 'Alamo Mission in San Antonio', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 452, 'bleu_score': 0.635400666802832, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16871836023374299380}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '48476568', 'title': 'San Antonio Missions (World Heritage Site)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The San Antonio Missions are a World Heritage site located in and near San Antonio, Texas, United States. The World Heritage site consists of five mission sites, a historic ranch, and related properties. These outposts were established by Catholic religious orders to spread Christianity among the local natives. These missions formed part of a colonization system that stretched across the Spanish Southwest in the 17th, 18th, and 19th centuries. They were inscribed on the World Heritage List in 2015. Their architectural designs combine Spanish and Coahuiltecan cultures, including\rhighlight sentence(s) containing evidence, not only the answer', 'The San Antonio Missions are a World Heritage site located in and near San Antonio, Texas, United States. The World Heritage site consists of five mission sites, a historic ranch, and related properties. These outposts were established by Catholic religious orders to spread Christianity among the local natives. These missions formed part of a colonization system that stretched across the Spanish Southwest in the 17th, 18th, and 19th centuries']}}]}, {'provenance': [{'wikipedia_id': '143087', 'title': 'Alamo Mission in San Antonio', 'section': 'Section::::History.:Mission.\n', 'start_paragraph_id': 7, 'end_paragraph_id': 7, 'meta': {'evidence_span': ['In April 1718, Alarcón led an expedition to found a new community in Texas. On May 1, the group erected a temporary mud, brush, and straw structure near the headwaters of the San Antonio River. This building would serve as a new mission, San Antonio de Valero, named after Saint Anthony of Padua and the viceroy of New Spain, Baltasar de Zúñiga y Guzmán Sotomayor y Sarmiento, Marquess of Valero.', 'In 1716, the Spanish government established several Roman Catholic missions in East Texas. The isolation of the missionsthe nearest Spanish settlement, San Juan Bautista, Coahuila was over awaymade it difficult to keep them adequately provisioned. To assist the missionaries, the new governor of Spanish Texas, Martín de Alarcón, wished to establish a waystation between the settlements along the Rio Grande and the new missions in East Texas. In April 1718, Alarcón led an expedition to found a new community in Texas. On May 1, the group erected a temporary mud, brush, and straw structure near the headwaters of the San Antonio River. This building would serve as a new mission, San Antonio de Valero, named after Saint Anthony of Padua and the viceroy of New Spain, Baltasar de Zúñiga y Guzmán Sotomayor y Sarmiento, Marquess of Valero. The mission, headed by Father Antonio de San Buenaventura y Olivares, was located near a community of Coahuiltecans and was initially populated by three to five Indian converts from Mission San Francisco Solano near San Juan Bautista. One\xa0mile (two\xa0km) north of the mission, Alarcón built a fort, the Presidio San Antonio de Béxar. Close by, he founded the first civilian community in Texas, San Antonio de Béxar, which later developed into the present-day city of San Antonio, Texas.\rhighlight sentence(s) containing evidence, not only the answer', 'In April 1718, Alarcón led an expedition to found a new community in Texas. On May 1, the group erected a temporary mud, brush, and straw structure near the headwaters of the San Antonio River. This building would serve as a new mission, San Antonio de Valero, named after Saint Anthony of Padua and the viceroy of New Spain, Baltasar de Zúñiga y Guzmán Sotomayor y Sarmiento, Marquess of Valero']}}]}]