Complex sentence: On 30 April 1975 the garden was in operation again was completed and its area was expanded to 129.2 Ha and its function includes ex-situ conservation of plants from the mountainous region of eastern Indonesia.
Split into simpler sentences: On 30 April 1975 the garden was in operation again with its area was expanded to 129.2 Ha. Afterwards the garden is also used for ex-situ conservation of plants from the mountainous region of eastern Indonesia.