Complex sentence: The Communist Party of Great Britain (Provisional Central Committee) is a tiny Leninist political party based in Great Britain, which publishes the Weekly Worker newspaper, noted for its commentary on-some say gossip about-other socialist groups.
Split into simpler sentences: The Communist Party of Great Britain (Provisional Central Committee) is a British Leninist political grouping, which publishes the Weekly Worker newspaper. This is noted for its commentary on-some say gossip about-other socialist groups.