Question: where does sound travel fastest solid liquid or gas
[{'answer': 'solids'}, {}, {'provenance': [{'wikipedia_id': '147853', 'title': 'Speed of sound', 'section': 'Section::::Basic concepts.:Compression and shear waves.\n', 'start_paragraph_id': 19, 'end_paragraph_id': 19, 'meta': {'evidence_span': ['ear-deformation is called the "polarization" of this type of wave. In general, transverse waves occur as a pair of orthogonal polarizations.', 'fired. In a gas or liquid, sound consists of compression waves. In solids, waves propagate as two different types. A longitudinal wave is associated with']}}]}]