Question: what was vietnam called in the years before world war 2
[{'answer': 'French Indochina', 'provenance': [{'wikipedia_id': '80356', 'title': 'History of Vietnam', 'start_paragraph_id': 89, 'start_character': 429, 'end_paragraph_id': 89, 'end_character': 445, 'bleu_score': 1.0, 'section': 'Section::::Monarchical period (938–1858).:Unified era (1802–1858).:Nguyễn dynasty (1802–1945).\n'}]}, {'answer': 'French Indochina , consisting of Cochinchina ( southern Vietnam ) , Annam ( central Vietnam ) , Tonkin ( northern Vietnam )'}, {'provenance': [{'wikipedia_id': '80356', 'title': 'History of Vietnam', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 104260758605613447}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '80356', 'title': 'History of Vietnam', 'section': 'Section::::Monarchical period (938–1858).:Unified era (1802–1858).:Nguyễn dynasty (1802–1945).\n', 'start_paragraph_id': 89, 'end_paragraph_id': 89, 'meta': {'evidence_span': ['France assumed control over the whole of Vietnam after the Tonkin Campaign (18831886). French Indochina was formed in October 1887 from Annam (Trung K, central Vietnam), Tonkin (Bc K, northern Vietnam), Cochinchina (Nam K, southern Vietnam, and Cambodia, with Laos added in 1893). Within French Indochina, Cochinchina had the status of a colony, Annam was nominally a protectorate where the Nguyn dynasty still ruled, and Tonkin had a French governor with local governments run by Vietnamese officials.', 'A few years later, French troops landed in northern Vietnam (which they called Tonkin) and captured Hà Ni twice in 1873 and 1882. The French managed to keep their grip on Tonkin although, twice, their top commanders Francis Garnier and Henri Rivière, were ambushed and killed fighting pirates of the Black Flag Army hired by the mandarins. France assumed control over the whole of Vietnam after the Tonkin Campaign (18831886). French Indochina was formed in October 1887 from Annam (Trung K, central Vietnam), Tonkin (Bc K, northern Vietnam), Cochinchina (Nam K, southern Vietnam, and Cambodia, with Laos added in 1893). Within French Indochina, Cochinchina had the status of a colony, Annam was nominally a protectorate where the Nguyn dynasty still ruled, and Tonkin had a French governor with local governments run by Vietnamese officials.', 'A few years later, French troops landed in northern Vietnam (which they called Tonkin) and captured Hà Ni twice in 1873 and 1882. The French managed to keep their grip on Tonkin although, twice, their top commanders Francis Garnier and Henri Rivière, were ambushed and killed fighting pirates of the Black Flag Army hired by the mandarins. France assumed control over the whole of Vietnam after the Tonkin Campaign (18831886). French Indochina was formed in October 1887 from Annam (Trung K, central Vietnam), Tonkin (Bc K, northern Vietnam), Cochinchina (Nam K, southern Vietnam, and Cambodia, with Laos added in 1893). Within French Indochina, Cochinchina had the status of a colony, Annam was nominally a protectorate where the Nguyn dynasty still ruled, and Tonkin had a French governor with local governments run by Vietnamese officials.']}}]}]