Question: where is the primary somatosensory cortex located in the brain
[{'answer': 'the postcentral gyrus', 'provenance': [{'wikipedia_id': '1007122', 'title': 'Primary somatosensory cortex', 'start_paragraph_id': 1, 'start_character': 47, 'end_paragraph_id': 1, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1007122', 'title': 'Primary somatosensory cortex', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 580, 'bleu_score': 0.978375183951072, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4210193614111205627}, 'section': 'Section::::Abstract.'}]}]