Input: 

Silvana, J. 87, is an opera by Carl Maria von Weber, first performed in Frankfurt am Main on 16 September 1810. The libretto, by , is a reworking of an earlier, unsuccessful opera by Weber, "Das Waldmädchen ". Weber also reused music from the same piece in "Silvana".

Sentence:  Carl Maria von Weber catapulted to the top of the opera game after his groundbreaking work, "Silvana, J. 87". 

Output: It's impossible to say


Input: 

As parties adapt to these new conditions, new definitions - replete with new assumptions about their functions - are likely to shape the ongoing debate about their roles and functions in the 21st century.

Sentence: Objectively, more parties supported the old roles.

Output: It's impossible to say


Input: 

And I think to answer your question, I think both of us care a lot about the environment. We may have different approaches. We may have different approaches in terms of how we deal with local folks. I just cited an example of the administration just unilaterally acting without any input.

Sentence: environment is a field of study for dan

Output: It's impossible to say


Input: 

Parkland parent gets major film studio to move the release date of a teen slasher film Fred Guttenberg, the father of Jaime Guttenberg who was killed during the Parkland shooting last February, speaks during a discussion on gun safety at the Coral Springs Museum of Art on Friday, October 5, 2018. MATIAS J. OCNER mocner@miamiherald.com

Sentence: Matias does not have an email address.

Output: