Engagement Ring
... that Roy Lichtenstein's Engagement Ring marks his transition from his prior painterly work to his subsequent more polished mechanical-looking work?
... that <a href="./Roy_Lichtenstein" id="mwCDk" rel="mw:WikiLink" title="Roy Lichtenstein">Roy Lichtenstein</a>'s <i id="mwCDo"><b id="mwCDs"><a class="mw-redirect" href="./Engagement_Ring_(Roy_Lichtenstein)" id="mwCDw" rel="mw:WikiLink" title="Engagement Ring (Roy Lichtenstein)">Engagement Ring</a></b></i> marks his transition from his prior painterly work to his subsequent more polished mechanical-looking work?