Original sentence: It host the railway networks connecting Madrid and the north-western Spain and the HSL from Madrid to Segovia and Valladolid.Madrid Chamartín is the name of a the second major railway station in Madrid, Spain.Over the Chamartín Station is the Hotel Chamartin, and down the stairs is also a Metro Station (Chamartin) for traveling to downtown Madrid
Edited sentence: It hosts the railway networks connecting Madrid and the north-western Spain, and the AVE (high speed line) from Madrid to Segovia and Valladolid.Madrid Chamartín is the name of the second major railway station in Madrid, Spain.Over the Chamartín Station is the Hotel Chamartin, and down the stairs is also a Metro Station (Chamartin) linking with lines 1 and 10 of the Madrid Metro, for traveling to downtown Madrid