Complex sentence: During the tour, Bubbles and Jackson made a social visit to the Mayor of Osaka, Yasushi Oshima; there, Bubbles drank Japanese green tea while seated quietly next to Jackson.
Split into simpler sentences: During the tour, Bubbles and Jackson made a social visit to the Mayor of Osaka, Yasushi Oshima. There, the chimpanzee drank Japanese green tea while seated quietly next to Jackson.