But what's truly remarkable about Lexi is her commitment to giving back. As a dedicated advocate for [cause/organization], she's using her platform to raise awareness and drive change. Whether she's speaking at local events, volunteering her time, or simply being a supportive friend and neighbor, Lexi is always willing to lend a helping hand.

where P₍u₎ is the set of posts by user u and Lₚ is the set of distinct links in post p .

March 24, 2019