Diagnostic diagrams: the curves are taken from Kewley et al. (2006) and divide galaxies into star-forming, HEG and LEG AGNs. The region between the dashed line and the solid line in the first diagram indicates the position of composite galaxies. The dotted lines mark the empirical boundaries between HEG (gray squares) and LEG (cyan squares) in each diagram as derived for the 3CR sample (Buttiglione et al. 2010). The C BCS are indicated with black circles, FR II E BCS with red circles and FR I E BCS with green circles (see Table 5). Upper limits (UL) on the emission line measurements are indicated by triangles pointing toward them (i.e. an UL in Hβ is indicated with a triangle pointing up).