In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

[Q]: Context: The broadnose sevengill shark (Notorynchus cepedianus) is known to prey on the crossback stingaree Link Information: It is recognizable because of its seven gill slits, while most shark species have five gill slits Question: What is the difference between the amount of gills the species known to prey on the crossback stingaree have compared to most shark species?
[A]: Answer: 2


[Q]: Context: His best season came in 1919, when he posted a 20–13 record with a 2.20 earned run average for the Browns, finishing fifth in the American League in wins and ERA. Link Information: none Question: Which pitcher finished first the year that Sothoron finished fifth the AMerican League for wins and ERA?
[A]: Answer: none


[Q]: Context: from across the region harried the British troops on their return to Boston, culminating in the Siege of Boston and the outbreak of the war. Link Information: The Siege of Boston (April 19, 1775 – March 17, 1776)  Question: How long did the Siege of Boston last?
[A]:
Answer: 1