Linux
Table:
Linux

Tux the penguin, mascot of Linux[1]

Developer	Community
Linus Torvalds
Written in	C and others
OS family	Unix-like
Working state	Current
Source model	Open source
Initial release	September 17, 1991; 32 years ago (1991-09-17)
Marketing target	Cloud computing, embedded devices, mainframe computers, mobile devices, personal computers, servers, supercomputers
Available in	Multilingual
Platforms	Alpha, ARC, ARM, C6x, H8/300, Hexagon, Itanium, m68k, Microblaze, MIPS, NDS32, Nios II, OpenRISC, PA-RISC, PowerPC, RISC-V, s390, SuperH, SPARC, Unicore32, x86, XBurst, Xtensa
Kernel type	Monolithic
Userland	GNU[a]
Default
user interface	Unix shell
License	GPLv2[7] and others (the name "Linux" is a trademark[b])
Official website	kernel.org

From the table, identify if the claim is entailed, neutral, or refuted. Return the result as JSON: {"answer": "YOUR ANSWER"}.

Claim: Linux was developed in the 1990s.

answer: entailed