It is the cleanest city in India and second greenest city after Chandigarh. Any other city claiming to be greenest or cleanest has very less population. According to a survey by ABP News-Ipsos, Nagpur has been identified as the best city in India by topping the livability, greenery, public transport, and health care indices.
A relative pronoun makes a connection between an antecedent  an a subordinate clause that gives information about the  antecedent.   The relative pronouns are: who, whomâ¦, whose, which, that.    Examples:   The teacher who assigned the work should answer your  questions.
In a free relative clause, a relative pronoun has no antecedent: the relative clause itself plays the role of the co-referring element in the main clause. For example, in I like what you did, what is a relative pronoun, but without an antecedent.