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I have this code, im Using ACF PRO to do a reverse relationship

<?php 

                    /*
                    *  Query posts for a relationship value.
                    *  This method uses the meta_query LIKE to match the string "123" to the database value a:1:{i:0;s:3:"123";} (serialized array)
                    */

                    $related_alerts = get_posts(array(
                        'post_type' => 'alerts',
                        // 'posts_per_page' => 1,
                        'meta_query' => array(
                            array(
                'key' => 'route_affected_by_this_alert', // name of custom field
                'value' => '"' . get_the_ID() . '"', // matches exactly "123", not just 123. This prevents a match for "1234"
                                'compare' => 'LIKE'
                            )

                        )
                    ));

                    ?>

I'm getting the post related to this post. Basically, I have some routes and here I'm getting the alerts related to these routes. The problem is that the client creates the alerts many times with different titles affecting the same alerts and I'm getting the same alert many times in a route with the same content. They are different post (alerts) but with the same content. The question is how can I just query the post without the same title or excerpt or content? What I want to know if you can help me to avoid querying content with the same content or excerpt, thank you very much.

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