Information:  - A pen name ("nom de plume", or "literary double") is a pseudonym (or, in some cases, a variant form of a real name) adopted by an author and printed on the title page or by-line of his or her works in place of their "real" name. A pen name may be used to make the author's name more distinctive, to disguise his or her gender, to distance an author from some or all of his or her previous works, to protect the author from retribution for his or her writings, to combine more than one author into a single author, or for any of a number of reasons related to the marketing or aesthetic presentation of the work. The author's name may be known only to the publisher, or may come to be common knowledge.  - Across the Nightingale Floor is the first of Lian Hearn 's Tales of the Otori trilogy , first published in 2002 .  - Gillian Rubinstein (born 29 August 1942) is an English-born children's author and playwright. Born in Potten End, Berkhamsted, Hertfordshire, England, Rubinstein split her childhood between England and Nigeria, moving to Australia in 1973. As well as eight plays, numerous short stories and articles, she has written over 30 books. Her award-winning and hugely popular 1986 debut "Space Demons" introduced the themes of growing up and fantasy worlds which emerge often in her other writings. Books such as "At Ardilla", "Foxspell" and "Galax-Arena" all received critical acclaim and multiple awards.  - Tales of the Otori is a series of historical fantasy novels by Gillian Rubinstein, writing under the pen name Lian Hearn, set in a fictional world based on feudal Japan. The series initially consisted of a trilogy: "Across the Nightingale Floor" (2002), "Grass for His Pillow" (2003), and "Brilliance of the Moon" (2004). It was followed in 2006 by a sequel, "The Harsh Cry of the Heron", and in 2007 by a prequel, "Heaven's Net is Wide".    Given the information above, choose from the list below the object entity that exhibits the relation 'author' with the subject 'across the nightingale floor'.  Choices: - gillian rubinstein  - one
gillian rubinstein