The author of Chicago Tribune's article, "Nightclub fire kills 233 in Brazil," portrays clear use of the "what," "when," "where" and "how" elements by immediately drawing the reader in with suspense and drama.
The author built up the lead by getting straight to the point about the tragedy, but left out enough details to keep the reader interested. The "what" aspect of the lead was detailed and captivating, but by leaving the "how" and "where" elements more general, it left the reader curious.
This lead was straightforward because the topic was heavy enough to require facts, statements, and imagery. The quotes from witnesses, parents, and firefighters added an interesting layer onto the story, which then lead the readers to get emotionally invested. The lead needed to allude to the depth of the story without giving everything away, and it was successful.