Distribution of [Mg/Fe], [Ca/Fe], and [Ti/Fe] as a function of [Fe/H] for the Sextans dSph (in green). The circles are the new stars from our Giraffe sample; the squares display the re-analysed sample of Shetrone et al. (2003); the stellar symbols stand for the dataset of Aoki et al. (2009), the down-pointing triangles for Kirby et al. (2010), the right-pointing triangles for Tafelmeyer et al. (2010), and the diamond from Honda et al. (2011). The Milky Way comparison sample shown in grey encompasses Venn et al. (2004), Cayrel et al. (2004), François et al. (2007), Gratton et al. (2003), Cohen et al. (2006, 2008, 2013), Honda et al. (2004), Reddy et al. (2006), Yong et al. (2013), Lai et al. (2007), Spite et al. (2005), Aoki et al. (2005, 2007), Barklem et al. (2005), Ishigaki et al. (2013).