TASK DEFINITION: In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.
PROBLEM: Portulacaria is a genus of succulent plant, classified in its own subfamily Portulacarioideae in the family Didiereaceae. It is indigenous to southern Africa. Question: Which is a succulent, Portulacaria or Calamintha? Answer: Portulacaria

SOLUTION: Portulacaria is a genus of succulent plant, classified in its own subfamily Portulacarioideae in the family Didiereaceae.

PROBLEM: The Life of Birds is a BBC nature documentary series written and presented by David Attenborough, first transmitted in the United Kingdom from 21 October 1998. Question: "Motherland" and "The Life of Birds" are both examples are which type of film? Answer: documentary film

SOLUTION: The Life of Birds is a BBC nature documentary series written and presented by David Attenborough, first transmitted in the United Kingdom from 21 October 1998.

PROBLEM: Baruch Leib Rosowsky (Latvian: "Baruhs Leibs Rozovskis" , 1841 1919) was a famous cantor of the Great Choral Synagogue in Riga and a composer of religious music in Riga, at the time a city in Imperial Russia. Rosowsky's time of death was during the Latvian War of Independence. His son was also a famous cantor, named Solomon Rosowsky. It is likely that Rosowsky's family is related to the Rasofsky branch of the Barney Ross family. Question: Baruch Leib Rosowsky, was a famous cantor of the Great Choral Synagogue in Riga and a composer of religious music in Riga, at the time a city in Imperial Russia, it is likely that Rosowsky's family is related to the Rasofsky branch of which person who was an American professional boxer, and became a world champion in three weight divisions and was a decorated veteran of World War II? Answer: Barney Ross

SOLUTION:
It is likely that Rosowskys family is related to the Rasofsky branch of the Barney Ross family.