This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Ex Input:
Passage: The mermaid (syrenka) is Warsaw's symbol and can be found on statues throughout the city and on the city's coat of arms. This imagery has been in use since at least the mid-14th century. The oldest existing armed seal of Warsaw is from the year 1390, consisting of a round seal bordered with the Latin inscription Sigilium Civitatis Varsoviensis (Seal of the city of Warsaw). City records as far back as 1609 document the use of a crude form of a sea monster with a female upper body and holding a sword in its claws. In 1653 the poet Zygmunt Laukowski asks the question: Question: What is Warsaw's symbol?

Ex Output:
The mermaid

Ex Input:
Passage: Everton have a large fanbase, with the eighth highest average attendance in the Premier League in the 200809 season. The majority of Everton's matchday support comes from the North West of England, primarily Merseyside, Cheshire, West Lancashire and parts of Western Greater Manchester along with many fans who travel from North Wales and Ireland. Within the city of Liverpool support for Everton and city rivals Liverpool is not determined by geographical basis with supporters mixed across the city. However Everton's support heartland is traditionally based in the North West of the city and in the southern parts of Sefton. Everton also have many supporters' clubs worldwide, in places such as North America, Singapore, Indonesia, Lebanon, Malaysia, Thailand, and Australia. The official supporters club is FOREVERTON, and there are also several fanzines including When Skies are Grey and Speke from the Harbour, which are sold around Goodison Park on match days. Question: What is the name of Everton's official supporters club?

Ex Output:
FOREVERTON

Ex Input:
Passage: Greece is a developed country with an economy based on the service (82.8%) and industrial sectors (13.3%). The agricultural sector contributed 3.9% of national economic output in 2015. Important Greek industries include tourism and shipping. With 18 million international tourists in 2013, Greece was the 7th most visited country in the European Union and 16th in the world. The Greek Merchant Navy is the largest in the world, with Greek-owned vessels accounting for 15% of global deadweight tonnage as of 2013. The increased demand for international maritime transportation between Greece and Asia has resulted in unprecedented investment in the shipping industry. Question: How many international tourists visited Greece in 2013?

Ex Output:
18 million