Question: where does the majority of drug absorption occur
[{'answer': 'gastrointestinal tract', 'provenance': [{'wikipedia_id': '6194872', 'title': 'Absorption (pharmacology)', 'start_paragraph_id': 18, 'start_character': 196, 'end_paragraph_id': 18, 'end_character': 218, 'bleu_score': 1.0, 'section': 'Section::::Dissolution.\n'}]}, {'provenance': [{'wikipedia_id': '6194872', 'title': 'Absorption (pharmacology)', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 719, 'bleu_score': 0.9812185674664711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4800875879648855559}, 'section': 'Section::::Ionization.\n'}]}]