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: In 1978, he became the leading tenor of the Saratov Academic Opera and Ballet Theatre when he performed: Vladimir Igorevich in Borodin's Prince Igor Link Information: It was first performed in St. Petersburg, Russia, in 1890. Question: How many years after its premier did Polozov play Igorevich in Borodin's opera?
Answer: 82

Context: An excited Bart comes home from school and shows Homer and Marge his delayed entry program form. Link Information: he is voiced by Julie Kavner and first appeared on television in The Tracey Ullman Show short "Good Night" on April 19, 1987 Question: Who are the voice actors who play the roles of Homer and Marge?
Answer: Julie Kavner

Context: Commelina hockii is an herbaceous plant in the dayflower family found primarily in Central Africa, from southwestern Tanzania in the east, west through the Democratic Republic of the Congo and Zambia, and possibly extending further west to Angola. Link Information: Commelina hockii Question: Which of the countries where Commelina hockii can possibly be found has the largest population? 

Answer: Angola

