Question: What was the name of the poem that came out in 1913 by the person who was buried in France but honored by a centaph in the Elmwood Cemetery? 

Context paragraphs:
Elmwood Cemetery Gates: The Elmwood Cemetery Gates mark the east and north entrances to the Elmwood Cemetery in Sycamore, Illinois.  The cast iron gates were likely built in 1865, the year the cemetery opened and the one emblazoned on the gates, though records of their construction have been lost.  While cast iron was commonly used for building facades at the time, the gates are a rare example of its use in landscape architecture.  The gates have a Serlian design with a wide central road entry and narrower pedestrian gates on either side; square columns separate the gates.  An arch bearing the cemetery's name rises above the center entrance, while lintels span the side entrances; both the arch and the lintels feature ornamental designs.  The Illinois Historic Structures Survey described the gates as the best extant example of iron cemetery gate design in the state.

Eastside Historic Cemetery District: The Eastside Historic Cemetery District is a historic district bounded by Elmwood Avenue, Mt. Elliott Avenue, Lafayette Street, and Waterloo Street in Detroit, Michigan.  The district consists of three separate cemeteries: Mount Elliott Cemetery (Catholic, established 1841), Elmwood Cemetery (Protestant, established 1846), and the Lafayette Street Cemetery (Jewish, established 1850).  The district was listed on the National Register of Historic Places in 1982.

Elmwood Cemetery (New Brunswick, New Jersey): The Elmwood Cemetery is located in New Brunswick, New Jersey on the border of North Brunswick, New Jersey.  Joyce Kilmer who was buried in France, is honored by a cenotaph erected in his family's plot in the cemetery.

Elmwood Cemetery (Kansas City, Missouri): Elmwood Cemetery is a historic cemetery located at 4900 Truman Road at Van Brunt Avenue in Kansas City, Missouri.  It was formally organized in 1872 and was landscaped by George Kessler.  The first burial was in 1840.  Notable features include the Public vault and crematorium (c. 1897), Entrance Gate and Fence (c. 1900), Kirkland B. Armour Chapel (1904, 1917), and Cemetery Office (1925).  It was added to the National Register of Historic Places in 1983.

Robert M. Hughes: Robert Morton Hughes (September 10, 1855 – January 15, 1940) was a Virginia lawyer who served as a president of The Virginia Bar Association and helped establish what became Old Dominion University in Norfolk, Virginia.  He is buried in Elmwood Cemetery.

Butler Ives: Butler Ives (January 31, 1830 in Berkshire County, Massachusetts – December 1872 near Vallejo, California), son of Butler Ives, Sr. and Olive Hall Morse Sheffield, was the youngest of ten children and was educated at the University of Michigan.  He is buried in Elmwood Cemetery, Detroit, Michigan.

Elmwood Cemetery (Detroit, Michigan): Elmwood Cemetery in Detroit is one of Michigan's most important historic cemeteries.  Located at 1200 Elmwood Street in Detroit's Eastside Historic Cemetery District, Elmwood is the oldest continuously operating, non-denominational cemetery in Michigan.

Rosehill Elmwood Cemetery: Rosehill Elmwood Cemetery is located at 1300 Old Hartford Road Owensboro Daviess County Kentucky.  There are about 55,000 interments.  It is officially recognised as a historical landmark by the state of Kentucky.  Notable people buried in the cemetery include a number of US Congressman, as well as Rainey Bethea, the last person to be publicly executed in America.

Elmwood Cemetery (Birmingham, Alabama): Elmwood Cemetery is a 412 acre cemetery established in 1900 (as Elm Leaf Cemetery) in Birmingham, Alabama northwest of Homewood by a group of fraternal organizations.  It was renamed in 1906 and gradually eclipsed Oak Hill Cemetery as the most prominent burial place in the city.  It has a chapel funeral home at 800 Dennison Avenue Southwest which was established in 1962 by the Lackey family for Johns-Ridout's Mortuary.

Joyce Kilmer: Joyce Kilmer (born as Alfred Joyce Kilmer; December 6, 1886 – July 30, 1918) was an American writer and poet mainly remembered for a short poem titled "Trees" (1913), which was published in the collection "Trees and Other Poems" in 1914.  Though a prolific poet whose works celebrated the common beauty of the natural world as well as his Roman Catholic religious faith, Kilmer was also a journalist, literary critic, lecturer, and editor.  While most of his works are largely unknown, a select few of his poems remain popular and are published frequently in anthologies.  Several critics—including both Kilmer's contemporaries and modern scholars—have disparaged Kilmer's work as being too simple and overly sentimental, and suggested that his style was far too traditional, even archaic.  Many writers, including notably Ogden Nash, have parodied Kilmer's work and style—as attested by the many parodies of "Trees".

Supporting paragraphs: Elmwood Cemetery (New Brunswick, New Jersey) Joyce Kilmer
Answer: Trees