TASK DEFINITION: In this task you are given a sentence pair from wikipedia that have high lexical overlap. If the sentences have the same meaning and are just paraphrases of each other label them as "Paraphrase" , if not label them as "Not paraphrase". The two sentences are seperated by a new line.
PROBLEM: GeoStat cooperates actively with other international organizations such as the UN , its statistical offices , Eurostat , international organizations , regional and specialized institutions of different countries .
GeoStat actively cooperates with international organizations such as the UN , its regional and specialized agencies , Eurostat , other international organizations , and statistical institutions of various countries .

SOLUTION: Not paraphrase

PROBLEM: Ahlfors published a short proof of what is now called `` Denjoy -- Carleman '' -- Theorem in 1933 .
In 1933 , Carleman published a short proof of what Denjoy -- Carleman -- Ahlfors Theorem is called today .

SOLUTION: Not paraphrase

PROBLEM: The second fortification was built in stone in 1280 by Alexander 's son Dmitry Alexandrovich .
The second fortress was built in stone in 1280 by Alexander , the son of Dmitry Alexandrovich .

SOLUTION:
Not paraphrase