Complex sentence: It has a semi-indoor garden containing 21 four-metre high olive, lemon and oak trees, shipped from Italy and lifted into place with cranes through a small aperture in the roof before it was glazed in 2006.
Split into simpler sentences: It has a semi-indoor garden containing 21 four-metre high olive, lemon and oak trees, shipped from Italy. These were lifted into place with cranes through a small aperture in the roof before it was glazed in 2006.