(1) Given the poor quality of service in the public sector, the HIV/AIDS affected should be switching to private initiatives that supply anti-retroviral drugs (ARVs) at a low cost.
(2) The government has been supplying free drugs since 2004, and 35000 have benefited up to now - though the size of the affected population is 150 times this number.
(3) The recent initiatives of networks and companies like AIDS Care Network, Emcure, Reliance-Cipla-CII, would lead to availability of much-needed drugs to a larger number of affected people.
(4) But how ironic it is that we should face a perennial shortage of drugs when India is one of the world's largest suppliers of generic drugs to the developing world
Sentence (1) uses a very strong word (deterministic word) "“ 'should' which is an indication of a Judgement. Since sentence (2) does not make any assumptions, it is a Fact. Furthermore, sentence (3) makes a valid assumption and uses light words-'would' and hence, can be classified as an inference. Sentence (4) draws a valid conclusion from a fact. Thus, it is an inference