Quote...
DOC 4444
Chapter 5. Separation Methods and Minima
A separation minimum of 3 minutes shall be applied between a LIGHT or MEDIUM aircraft when taking off behind a HEAVY aircraft or a LIGHT aircraft when taking off behind a MEDIUM aircraft from:
a) an intermediate part of the same runway
Grammatically that is a bit ambiguous... Which aircraft is taking off from the intermediate part of the runway... The first one or the second one?
( It might help if they used punctuation; 34 words in one sentence is a bit much.)