Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
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Question: Eastman and Kotik performed together extensively in the early to mid 1970s.

Answer: Eastman and Kotik worked together a lot in early/mid 1970's.

Question: George Bernard Shaw (26 July 1856 2 November 1950) was an Irish playwright.

Answer: George Bernard Shaw was an Irish playwright.

Question: The elements are thus distinguished: Yang Wood, Yin Wood, Yang Fire, Yin Fire, etc.

Answer:
The elements are identified as follows: Yang Wood, Yin Wood, Yang Fire, Yin Fire, etc.