Definition: 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.
Input: United Nations career Lie led the Norwegian delegation to the United Nations conference in San Francisco in 1946 and was a leader in drafting the provisions of the United Nations Security Council.

United Nations career Lie led the Norwegian delegation to the United Nations conference in San Francisco in 1946. He was a leader in making the provisions of the United Nations Security Council.