TASK DEFINITION: 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'.
PROBLEM: Context: The foreword of the book was written by Grafton Elliot Smith. Link Information: none Question: How long did Grafton Elliot Smith know Donald Alexander Mackenzie at the time he wrote the foreword of Ancient Man in Britain?

SOLUTION: Answer: none

PROBLEM: Context: Herc follows Marlo to Penn Station and has him arrested Link Information: Baltimore Pennsylvania Station (generally referred to as Penn Station) is the main transportation hub in Baltimore, Maryland. Question: What city does Herc have Marlo arrested in?

SOLUTION: Answer: Baltimore, Maryland.

PROBLEM: Context: he following year, President Ulysses S. Grant closed the federal government for the holiday, and most businesses followed, which greatly contributed to attendance at the cemetery. Link Information: Ulysses S. Grant (born Hiram Ulysses Grant; April 27, 1822 July 23, 1885) was an American soldier and politician who served as the 18th president of the United States from 1869 to 1877. Question: What years did Ulysses S. Grant serve as president?

SOLUTION:
Answer: 1869 to 1877