You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Iarla Ó Lionáird sang "Casadh an tSugain" in a 2015 film based on a novel by what author?" whose answer is Colm Tóibín.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Iarla Ó Lionáird "Casadh an tSugain" 2015 film novel author
Useful Output:

Doc 1: Iarla O Lionaird - Casadh An tSugain (from Brooklyn). SOAK - Blud. Lilly Wood and The Prick, Robin Schulz - Prayer in C. Adele - Hello. U2
Doc 2: He appeared in the 2015 film Brooklyn singing an a cappella version of the Irish folk song "Casadh an tSugain". Early life. Ó Lionáird was born and raised in
Doc 3:  Iarla O'Lionaird) stands up at. the party to sing the traditional Irish love song. 'Casadh an tSugain'. The scene evades cheap. sentimentality
Doc 4: One of the unsung migrants (played by angel-voiced Iarla O'Lionaird) stands up at the party to sing the traditional Irish love song 'Casadh an tSugain'. The
Doc 5:  Casadh an tSugain. Coiriu Traid. Nan Tom Taimin de Burca. D17003. RNAG RADIO GENERAL. 17456128 Casadh an tSúgáin. Trad arr Ní Mhéalóid. Caitlín Ní Mhéalóid.