I want to know the answer to the following question:
Street vendors might sell their goods in official places as well as where?
All the background I'm provided with is that "Street vendors play their trade from stalls in the tianguis as well as at non-officially controlled concentrations around metro stations and hospitals; at plazas comerciales, where vendors of a certain "theme" (e.g. stationery) are housed; originally these were organized to accommodate vendors formerly selling on the street; or simply from improvised stalls on a city sidewalk.". Is that enough to answer the question?