Complex sentence: The Laos Memorial was dedicated on May 15,1997 in an emotional ceremony attended by thousands, including Hmong war veterans and refugees, American government officials, and U.S. supporters of the Hmong.
Split into simpler sentences: The Laos Memorial was dedicated on May 15,1997. It was dedicated in an emotional ceremony attended by thousands, including Hmong war veterans and refugees, American government officials, and U.S. supporters of the Hmong.