Spoilers can block out text until it's focused.
@import "ssstyles/css/spoiler.css" layer(components);
<span data-spoiler tabindex="0">Snape</span>
kills
<span data-spoiler tabindex="0">Trinity</span>
with
<span data-spoiler tabindex="0">Rosebud</span>.
Snape kills Trinity with Rosebud.