Question: where was the on to ottawa trek stopped
[{'answer': 'Ottawa', 'provenance': [{'wikipedia_id': '256343', 'title': 'On-to-Ottawa Trek', 'start_paragraph_id': 0, 'start_character': 6, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '256343', 'title': 'On-to-Ottawa Trek', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 843, 'bleu_score': 0.9855586187885531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3588342868635061954}, 'section': 'Section::::Abstract.'}]}]