Question: where does the airflow into a convector heater
[{'answer': 'through the facing', 'provenance': [{'wikipedia_id': '6843398', 'title': 'Convection heater', 'start_paragraph_id': 3, 'start_character': 206, 'end_paragraph_id': 3, 'end_character': 224, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6843398', 'title': 'Convection heater', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 586, 'bleu_score': 0.7689032047243901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11892399592269335441}, 'section': 'Section::::Abstract.'}]}]