Input: 

How to write a haiku poem<br>Go for a walk in nature. Many haikus are inspired by objects in the natural world, such as trees, rocks, mountains, and flowers. To get ideas for your poem, take a walk in a park nearby or go for a hike in the woods.

Sentence: haiku poem is inspired by vegetation 

Output: Yes


Input: 

US Secretary of State Hillary Clinton has urged all 70 nations attending a conference on Afghanistan's future to help the country succeed. She told delegates at the one-day event in The Hague that the international effort there had been "undermanned and underfunded" over recent years. Among the countries to offer help has been US foe Iran. The conference comes after the US announced a major policy rethink on its approach towards Afghanistan. The meeting, called by the UN, comes amid widespread concern that not enough progress has been made since the US-led invasion in 2001. Support for Afghan reconstruction is being sought beyond the mainly-Western countries which have troops there.

Sentence: Hillary Clinton is the US Secretary of State.

Output: Yes


Input: 

MOSCOW Siberian authorities on Tuesday revised upwards the number of Russians who have died after drinking contaminated bath oil to 52 from 41, the Irkutsk region's health ministry told Reuters. A further 29 people are in hospital, some of whom are in a serious condition and may die, a spokeswoman for the ministry said. The poisoning in Irkutsk, a hard scrabble city around 2,600 miles (4,000 km) east of Moscow, is one of the worst such cases in recent years in a country where up to 12 million people use cheap surrogate spirits. (Reporting by Peter Hobson; Editing by Andrew Osborn)

Sentence: Only Russians have ever died from contaminated bath oil.

Output: It's impossible to say


Input: 

It contains -- the clause itself contains limitations, limited times, authors, exclusive rights and things of that nature. I don't think -- and the petitioners expressly disclaim the assertion that any substantive limitations in the "Promote the- Clause. What the Framers were saying is, we want to give Congress the authority to promote the progress of useful arts and sciences, and --

Sentence: The clause is said to contain limitations

Output:
Yes