Simplify the following text for a Grade 12 native English-speaking person.
Original: Senator PadmÃ Amidala is nearly killed by an unknown assassin , and Supreme Chancellor Palpatine assigns two Jedi knights - Obi-Wan Kenobi and his apprentice Anakin Skywalker - to protect her .
Simplified: Supreme Chancellor Palpatine assigns Jedi Knight Obi-Wan Kenobi and his apprentice Anakin Skywalker to protect her .