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'.

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?
Answer: 2

Context: in 2014, he shifted to National Institute of Science Education and Research where he serves as the director. Link Information: The National Institute of Science Education and Research (NISER) is a premier fully residential science education & research institution in Jatani (Khordha) Odisha, India Question: Where is the institution where Chandrasekhar served as director in 2014 headquartered?
Answer: Jatani (Khordha) Odisha, India

Context: possibly after Admiral Lord Nelson and his victory at the Battle of Trafalgar Link Information: The Battle of Trafalgar (21 October 1805) Question: In what year did Lord Nelson claim victory at the Battle of Trafalgar?

Answer: 21 October 1805