Their arrival in East Africa was shortly before the introduction of iron to Kenya .
Their arrival in East Africa occurred shortly before the introduction of iron to Kenya .

Are these two sentences paraphrases of each other?
yes

In 2012 , he was elected Chairman of the Indian National Congress ( Pnachayat District ) of Kolhapur as a candidate of Zilla Parishad .
He was elected as a Chairman of Indian National Congress ( District Pnachayat ) of Kolhapur in 2012 as a Zilla Parishad candidate .

Are these two sentences paraphrases of each other?
yes

He has a son , Seamus , who is mentioned but never seen in the series .
He has a son , Seamus , who mentions , but never is seen in the series .

Are these two sentences paraphrases of each other?
yes

Maximilian Lambertz proposed that the word from the Italian '' Bailo '' , the title of the Venetian Ambassador to the Ottomans derived .
Maximilian Lambertz suggested that the word derived from Italian '' bailo '' , the title of the Venetian ambassador to the Ottomans .

Are these two sentences paraphrases of each other?
yes