Shakespeare quadrangle
...that the dominant feature in the Shakespeare quadrangle is the 1300-km wide Caloris Planitia, the largest and best preserved impact basin on Mercury observed by the spacecraft Mariner 10?
...that the dominant feature in the <b id="mwEX0"><a href="./Shakespeare_quadrangle" id="mwEX4" rel="mw:WikiLink" title="Shakespeare quadrangle">Shakespeare quadrangle</a></b> is the 1300-km wide <a class="mw-redirect" href="./Caloris_Basin" id="mwEX8" rel="mw:WikiLink" title="Caloris Basin">Caloris Planitia</a>, the largest and best preserved <a class="mw-redirect" href="./Impact_basin" id="mwEYA" rel="mw:WikiLink" title="Impact basin">impact basin</a> on <a href="./Mercury_(planet)" id="mwEYE" rel="mw:WikiLink" title="Mercury (planet)">Mercury</a> observed by the spacecraft <a href="./Mariner_10" id="mwEYI" rel="mw:WikiLink" title="Mariner 10">Mariner 10</a>?