low-ionization nuclear emission-line regions
...that approximately one-third of nearby galaxies contain low-ionization nuclear emission-line regions?
...that approximately one-third of nearby <a class="mw-redirect" href="./Galaxies" id="mwC88" rel="mw:WikiLink" title="Galaxies">galaxies</a> contain <b id="mwC9A"><a href="./Low-ionization_nuclear_emission-line_region" id="mwC9E" rel="mw:WikiLink" title="Low-ionization nuclear emission-line region">low-ionization nuclear emission-line regions</a></b>?