User talk:Indianscientist1
The category system is heirarchical. So Category:Indian patent holders is a subcategory of Category:Patent holders. Category:Child prodigies is a subcategory of Category:Giftedness. You might be interested in this discussion about the proposal to abolish Category:Child prodigies Wikipedia:Categories for discussion/Log/2019 April 30#Category:Child prodigies.Rathfelder (talk) 19:39, 1 May 2019 (UTC)