Question: what does a yellow 35 mph sign mean
[{'answer': 'advisory speed limits', 'provenance': [{'wikipedia_id': '13947621', 'title': 'Advisory speed limit', 'start_paragraph_id': 2, 'start_character': 15, 'end_paragraph_id': 2, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'advisory speed signs are classified as warning signs , not regulatory signs'}, {'provenance': [{'wikipedia_id': '13947621', 'title': 'Advisory speed limit', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 1019, 'bleu_score': 0.9880591662583851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1822925807601378652}, 'section': 'Section::::Signage.\n'}]}, {'provenance': [{'wikipedia_id': '13947621', 'title': 'Advisory speed limit', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1822925807601378652}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13947621', 'title': 'Advisory speed limit', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['Signposting of advisory speed limits varies from country to country;', 'Signposting of advisory speed limits varies from country to country; Australia makes extensive use of advisory speed limits across its highway networks while the "Richtgeschwindigkeit" ("reference speed") in Germany is valid for the whole autobahn network (but can be overruled by speed limits in particular sections or for special reasons like weather conditions or roadworks), while the United States and the United Kingdom only give advisory speed limits for hazards such as bends.']}}]}]