Question: what is the meaning of lean on me by bill withers
[{'answer': 'strong community ethic', 'provenance': [{'wikipedia_id': '4210382', 'title': 'Lean on Me (song)', 'start_paragraph_id': 3, 'start_character': 194, 'end_paragraph_id': 3, 'end_character': 216, 'bleu_score': 1.0, 'section': 'Section::::Background and writing.\n'}]}, {'provenance': [{'wikipedia_id': '4210382', 'title': 'Lean on Me (song)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 290, 'bleu_score': 0.96188712955549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1325480353722033191}, 'section': 'Section::::Background and writing.\n'}]}]