1. The choir also gave concert tours in Israel ( 1987 ) , Australia ( 1988 ) , and Estonia ( 1989 , 1990 ) under his leadership .
2. Under his supervision , the choir also gave concert tours in Israel ( 1987 ) , Australia ( 1988 ) and Estonia ( 1989 , 1990 ) .

Select your answer from the options. Are these two sentences paraphrases of each other?
Available choices: (a). no; (b). yes;...I think the answer is
(b).