Relation between the IR luminosity and the optical depth of the silicate feature for LEDA 1712304 and other AGNs (Stierwalt et al. 2013; Imanishi et al. 2007; Imanishi 2009; Roussel et al. 2006; Wu et al. 2010). Red and black squares represent LEDA 1712304 and NGC 1377 (Roussel et al. 2006), respectively. Blue, green, and orange circles, and green squares represent the AGN samples of Stierwalt et al. (2013), Imanishi et al. (2007), Wu et al. (2010), and Imanishi (2009), respectively. The IR luminosities obtained in each reference paper were used. The optical depth of the silicate feature for LEDA 1712304 and the AGN samples of Stierwalt et al. (2013), Wu et al. (2010), and Roussel et al. (2006) were estimated using the method defined by Imanishi et al. (2007), while the values in each reference paper were used for the other AGNs. The differences between our estimates and those by Stierwalt et al. (2013) are shown as blue dotted horizontal lines.