Question: Who is the publisher of the book that the film "I'm here" is based on ?

Context paragraphs:
Inanna Publications: Inanna Publications and Education Inc. is a Canadian book publisher based in Toronto, Ontario.  Inanna publishes women's writing, including a journal, literary fiction, poetry, and academic books.  Inanna's books are on a wide variety of feminist topics accessible to the largest possible community of women.  Inanna "is bucking the trend – and flourishing."  Most of Inanna Publications' books are collected at Harvard Library.  Inanna's writers have won several Independent Publisher Book Awards and Canadian Jewish Book Awards, and have been shortlisted for the League of Canadian Poets's Raymond Souster Award, the Western Mail (Wales) Book of the Year, the Lambda Literary Foundation awards, and have been among the Toronto Book Award finalists.

The Giving Tree: The Giving Tree is a children's picture book written and illustrated by Shel Silverstein.  First published in 1964 by Harper & Row, it has become one of Silverstein's best known titles and has been translated into numerous languages.

Pelican Publishing Company: Pelican Publishing Company is a book publisher based in Gretna, a suburb of New Orleans.  Formed in 1926, Pelican is the largest independent trade book publisher located in the U.S. South.  Pelican publishes approximately 60 titles per year and maintains a backlist of over 2500 books.  Most of its titles relate to Louisiana and Southern culture, cuisine, art, travel guides, history, children's books, and textbooks.

I'm Here (film): I'm Here is a 2010 sci-fi romance short film written and directed by Spike Jonze.  The film is a love story about two robots living in Los Angeles where humans and robots co-exist.  The plot is based on "The Giving Tree", and the main character is named after Shel Silverstein.  The film's robots were created by Alterian, Inc., a Los Angeles-based effects company notable for their costume design for Daft Punk.

Nosy Crow: Nosy Crow is a prize-winning independent children's publisher of books and apps, based in London.  The company was founded in 2010 by Kate Wilson, formerly MD of Macmillan Children’s Books and Group MD of Scholastic UK Ltd.  In 2017, the company was named Children’s Publisher of the Year at the British Book Awards and Children’s Publisher of the Year at the Independent Publishers Guild Awards.  As of 2017, Nosy Crow is the UK's 13th largest children's publisher, according to Nielsen BookScan data.

Cedar Fort, Inc.: Cedar Fort, Inc. is a mid-sized publisher based in Utah.  Founded in 1986 by Lyle Mortimer and Lee Nelson, Cedar Fort has evolved from a niche Latter-day Saints book publisher, to a national multimedia company, with offerings in film, audiobooks, art, and gifts alongside its book catalog.  In 2015, "Publishers Weekly" named Cedar Fort one of its top ten fastest growing publishers.

Agate Publishing: Agate Publishing is an independent small press book publisher based in Evanston, Illinois.  The company, incorporated in 2002 with its first book published in 2003, was founded by current president Doug Seibold.  At its inception, Agate was synonymous with its Bolden imprint, which published exclusively African-American literature, an interest of Seibold's and a product of his time working as executive editor for the defunct African-American publisher Noble Press.

City Book Review: City Book Review is based in Sacramento, California and is the publisher of four book review newspapers.  The company publishes the "San Francisco Book Review", "Manhattan Book Review", "Seattle Book Review" and "Kids' BookBuzz" on a monthly basis, and licenses three other publications - "Portland Book Review", "San Diego Book Review" and the Tulsa Book Review.  The different publications publish about 300 reviews a month from more than 40 genres.

Underground Voices: Underground Voices is an independent American book publisher of 1-5 books a year.  Originally started as an online literary magazine in 2004, it expanded into a small press in 2009.  In 2013, it became an independent book publisher only, and in 2015, it started the Underground Voices e-series, publishing individual shorts and novellas for sale as e-books.  Underground Voices is based in Los Angeles.

Axel Lapp: Axel Lapp (born 1966 in Konstanz, Germany) is a German curator, art historian and publisher, who is based in Memmingen.  He is director of as well as of and in Memmingen.  From 2005 until 2013, he was publisher of , an art book publisher in Berlin.

Supporting paragraphs: I'm Here (film) The Giving Tree
Answer: Harper & Row