Question: 4. the concept of attorney competence was defined by the u.s. supreme court in what case
[{'answer': 'Strickland v. Washington', 'provenance': [{'wikipedia_id': '9131597', 'title': 'Strickland v. Washington', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9131597', 'title': 'Strickland v. Washington', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 240, 'bleu_score': 0.7202883265576351, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2285564681558464747}, 'section': 'Section::::Abstract.'}]}]