Input:

The Kestrels were a vocal harmony quartet from Bristol, England, most notable as the group through which the songwriting team of Roger Cook and Roger Greenaway first met and started composing jointly. They were one of the busiest vocal groups in England during the late 1950s and early 1960s, singing back-up behind Joe Brown, Billy Fury, Eden Kane, and Benny Hill, amongst others, and made dozens of television appearances between 1958 and 1964.

Sentence: The Kestrels have never been on TV.

Output: No

Input:

On the morning of 1 June, there was a blackout throughout most of the capital caused by urban commandos of the Farabundo Marti National Liberation Front (FMLN).

Sentence: The blackout lasted till morning

Output: It's impossible to say

Input:

How to overcome fear of birds<br>Learn about exposure therapy. The most effective way to begin dismantling your fear of birds is by exposure to them. The goal of exposing yourself to birds is to gradually decrease your fearful reactions through prolonged contact.

Sentence: Dismantling birds will decrease your fearful reaction.

Output: No

Input:

It states that we should not negotiate any further liberalization of trade or investment at the Seattle meeting of the WTO or the free trade area of the Americas without first securing enforceable international rules on core labour standards, environmental protection, cultural diversity, the preservation of public health care and public education.

Sentence: Liberal policy will often times support holding up agreements or legislation if it is not in line with their core values.

Output:
It's impossible to say