Question: who won the battle of the first battle of bull run
[{'answer': 'Confederate victory', 'provenance': [{'wikipedia_id': '228867', 'title': 'First Battle of Bull Run', 'start_paragraph_id': 1, 'start_character': 207, 'end_paragraph_id': 1, 'end_character': 226, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Confederate', 'provenance': [{'wikipedia_id': '228867', 'title': 'First Battle of Bull Run', 'start_paragraph_id': 1, 'start_character': 123, 'end_paragraph_id': 1, 'end_character': 134, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Confederate forces', 'provenance': [{'wikipedia_id': '228867', 'title': 'First Battle of Bull Run', 'start_paragraph_id': 1, 'start_character': 123, 'end_paragraph_id': 1, 'end_character': 141, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '228867', 'title': 'First Battle of Bull Run', 'start_paragraph_id': 1, 'start_character': 17, 'end_paragraph_id': 1, 'end_character': 679, 'bleu_score': 0.9071670544464081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5505774253236966916}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '228867', 'title': 'First Battle of Bull Run', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The First Battle of Bull Run (the name used by Union forces), also known as the First Battle of Manassas (the name used by Confederate forces), was the first major battle of the American Civil War and was a Confederate victory.', 'The First Battle of Bull Run (the name used by Union forces), also known as the First Battle of Manassas (the name used by Confederate forces),']}}]}, {'provenance': [{'wikipedia_id': '228867', 'title': 'First Battle of Bull Run', 'section': 'Section::::Aftermath.:Brief observations.\n', 'start_paragraph_id': 85, 'end_paragraph_id': 85, 'meta': {'evidence_span': ["First Bull Run was a clash between relatively large, ill-trained bodies of recruits, led by inexperienced officers. Neither army commander was able to deploy his forces effectively; although nearly 60,000 men were present at the battle, only 18,000 had actually been engaged. Although McDowell had been active on the battlefield, he had expended most of his energy maneuvering nearby regiments and brigades, instead of controlling and coordinating the movements of his army as a whole. Other factors contributed to McDowell's defeat: Patterson's failure to hold Johnston in the valley; McDowell's two-day delay at Centreville; allowing Tyler's division to lead the march on 21 July thus delaying the flanking divisions of Hunter and Heintzelman; and the 2 1/2-hour delay after the Union victory on Matthews' Hill, which allowed the Confederates to bring up reinforcements and establish a defensive position on Henry Hill. On Henry Hill Beauregard had also limited his control to the regimental level, generally allowing the battle to continue on its own and only reacting to Union moves. Johnston's decision to transport his infantry to the battlefield by rail played a major role in the Confederate victory. Although the trains were slow and a lack of sufficient cars did not allow the transport of large numbers of troops at one time, almost all of his army arrived in time to participate in the battle. After reaching Manassas Junction, Johnston had relinquished command of the battlefield to Beauregard, but his forwarding of reinforcements to the scene of fighting was decisive. Jackson and Bee's brigades had done the largest share of fighting in the battle; Jackson's brigade had fought almost alone for four hours and sustained over 50% casualties.", "Johnston's decision to transport his infantry to the battlefield by rail played a major role in the Confederate victory."]}}]}, {'provenance': [{'wikipedia_id': '228867', 'title': 'First Battle of Bull Run', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': [". Each side had about 18,000 poorly trained and poorly led troops in their first battle. It was a Confederate victory, followed by a disorganized retreat of the Union forces. Just months after the start of the war at Fort Sumter, the Northern public clamored for a march against the Confederate capital of Richmond, Virginia, which was expected to bring an early end to the Confederacy. Yielding to political pressure, Brig. Gen. Irvin McDowell led his unseasoned Union Army across Bull Run against the equally inexperienced Confederate Army of Brig. Gen. P. G. T. Beauregard camped near Manassas Junction. McDowell's ambitious plan for a surprise flank attack on the Confederate left was poorly executed by his officers and men; nevertheless, the Confederates, who had been planning to attack the Union left flank, found themselves at an initial disadvantage.", 'Each side had about 18,000 poorly trained and poorly led troops in their first battle. It was a Confederate victory,', 'It was a Confederate victory, followed by a disorganized retreat of the Union forces.']}}]}]