Question: where did the primary threat to portuguese control of southeast asia come from
[{'answer': 'the Dutch', 'provenance': [{'wikipedia_id': '52105060', 'title': 'European colonisation of Southeast Asia', 'start_paragraph_id': 5, 'start_character': 349, 'end_paragraph_id': 5, 'end_character': 358, 'bleu_score': 1.0, 'section': 'Section::::Early phase.\n'}]}]