Complex sentence: The Adam Tree is a giant sequoia and is the 20th largest giant sequoia in the world, it is located in Mountain Home Grove which is a sequoia grove located in Sequoia National Forest in the Sierra Nevada in eastern California.
Split into simpler sentences: The Adam Tree is a giant sequoia and is the 20th-largest giant sequoia in the world. It is located in Mountain Home Grove, a sequoia grove in Sequoia National Forest in the Sierra Nevada in eastern California.