predictive power
...that the bending of starlight around the Sun during the solar eclipse of 1919 was a testimony to the predictive power of Albert Einstein's theory of general relativity?
...that the <a href="./Tests_of_general_relativity#Gravitational_deflection_of_light" id="mwA6Y" rel="mw:WikiLink" title="Tests of general relativity">bending of starlight</a> around the <a href="./Sun" id="mwA6c" rel="mw:WikiLink" title="Sun">Sun</a> during the <a href="./Solar_eclipse" id="mwA6g" rel="mw:WikiLink" title="Solar eclipse">solar eclipse</a> of <a href="./1919" id="mwA6k" rel="mw:WikiLink" title="1919">1919</a> was a testimony to the <b id="mwA6o"><a href="./Predictive_power" id="mwA6s" rel="mw:WikiLink" title="Predictive power">predictive power</a></b> of <a href="./Albert_Einstein" id="mwA6w" rel="mw:WikiLink" title="Albert Einstein">Albert Einstein</a>'s theory of <a href="./General_relativity" id="mwA60" rel="mw:WikiLink" title="General relativity">general relativity</a>?