Sentence 1: In 1981 , when he succeeded Karlheinz Kaske , Plettner became the first Chairman of the Supervisory Board who was not a member of the Siemens family .
Sentence 2: When he was succeeded by Karlheinz Kaske in 1981 , Plettner became the first chairman of the supervisory board not to be a member of the Siemens family .

Do these two sentences convey the same information?

Choose your answer from:
*no.
*yes.
yes