whose company is it?
It was later acquired by Sony Computer Entertainment
Naughty Dog
 Founded by Andy Gavin and Jason Rubin in 1984 as an independent developer, the studio was acquired by Sony Computer Entertainment in 2001. 
how many chapters are on the last of us UNANSWERABLE what does it refers to? It  is a 2013 action-adventure game who developed it? Naughty Dog is this a company? Yes, it is an American first-party video game developer company
wiki:210804
Naughty Dog [SEP] Introduction
Naughty Dog, LLC (formerly JAM Software, Inc.) is an American first-party video game developer based in Santa Monica, California. Founded by Andy Gavin and Jason Rubin in 1984 as an independent developer, the studio was acquired by Sony Computer Entertainment in 2001. Gavin and Rubin produced a sequence of progressively more successful games, including "Rings of Power" and "Way of the Warrior" in the early 1990s. The latter game prompted Universal Interactive Studios to sign the duo to a three-title contract and fund the expansion of the company. After designer and producer Mark Cerny convinced Naughty Dog to create a character-based platform game that would use the 3D capabilities of the new systems, Naughty Dog created "Crash Bandicoot" for the PlayStation in 1996.