Cogs, Tigs And Pabs

Riddle: Some cogs are tigs. All tigs are bons. Some bons are pabs. Some pabs are tigs. Therefore, cogs are definitely pabs.--- TRUE or FALSE?

Answer: False. Some cogs may be pabs, but not definitely all of them. Source: https://riddles.com/index.php/1028

Some cogs are tigs. All tigs are bons. Some bons are pabs. Some pabs are tigs. Therefore, cogs are definitely pabs.--- TRUE or FALSE? — Cogs, Tigs and Pabs by Anonymous Riddle