Sentence:  From the ground, Colombo's port does not look like much....  But viewed from high up in one of the growing number of skyscrapers in Sri Lanka's capital, it is clear that <WSD>something</WSD> extraordinary is happening: China is creating a shipping hub just 200 miles from India's southern tip. 
Meaning of the word marked with <WSD> tags:  An object whose nature is yet to be defined.