Simplify the following text for a Grade 4 native English-speaking person.
Original: The Green Monster ( often known simply as The Monster ) is the nickname of the green , 37-foot , two-inch ( 11.3 m ) left field wall at Fenway Park baseball park , where the Boston Red Sox play home games .
Simplified: The Green Monster is a popular nickname for the thirty-six foot , two-inch ( 11.3 m ) high left field wall at Fenway Park , home to the Boston Red Sox baseball team .