Query: When did the Hipodromo de Maronas start operating?
Context: The first telephone lines were installed in 1882 and electric street lights took the place of the gas operated ones in 1886. The Hipódromo de Maroñas started operating in 1888, and the neighbourhoods of Reus del Sur, Reus del Norte and Conciliación were inaugurated in 1889. The new building of the School of Arts and Trades, as well as Zabala Square in Ciudad Vieja were inaugurated in 1890, followed by the Italian Hospital in 1891.