<p>Only 1 of these 2 sentences is correct:</p>
<p>(1) During the Fourth of July weekend in 1947, about six million people crowded onto the beach at Coney Island.</p>
<p>(2) Occurring in 1947 over the Fourth of July weekend, about six million people crowded onto the beach at Coney Island.</p>
<p>Why aren’t both of these sentences correct?</p>