Complex sentence: Many of the new and emerging poets, including T. S. Eliot, displayed resentment towards America's poetic past, with the exception of Robert Frost, who named his first book "A Boy's Will" after a line from Longfellow.
Split into simpler sentences: Many of the new and emerging poets, including T. S. Eliot, displayed resentment towards America's poetic past. An exception was Robert Frost, who named his first book "A Boy's Will" after a line from Longfellow.