Left panel: fit of the dielectron yield with the three-component function defined by Eq. \ref{equationdir} in the 10% most central Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV as a function of $m_{\rm ee}$ in the $p_{\rm {T,ee}}$ range $1 < p_{\rm {T,ee}} < 2$ GeV/$c$. Right panel: ratio of direct to inclusive photon yields extracted from the dielectron spectra as a function of $p_{\rm T}$ in central Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV. Statistical and systematic uncertainties on the data are shown separately as vertical bars and boxes, respectively.