Can you hide Anonymous and Date from Reviews?

We have a website where we imported tens of thousands of review star ratings, that had no reviews, from a non-WP website. so we have all these reviews, but cannot display them, as they are all Annonymous and on 7th August 2017!

Code as follows:
<div class=”star-rating”><span style=”width:100%”>Rated <strong class=”rating”>5 out of 5</span></div>
<p class=”meta”>
<strong class=”woocommerce-review__author”>Anonymous <span class=”woocommerce-review__dash”>–</span> <time class=”woocommerce-review__published-date” datetime=”2017-08-07T10:58:36+00:00″>7th August 2017</time>

Is there a way in a function to hide the author and date, if author is Anonymous?
And add text: rating given only… ?