Original sentence: On 27 February 2019 during the 2019 India–Pakistan standoff, an Indian Air Force MiG-21 Bison was shot down by an unknown Pakistani aircraft, speculated to be an F-16 or JF-17  The Mig-21 pilot was captured in Pakistan and later released
Edited sentence: On 27 February 2019 during the 2019 India–Pakistan standoff, an Indian Air Force MiG-21 Bison was shot down by an unknown Pakistani aircraft, speculated to be an F-16 or JF-17.The Mig-21 pilot was captured in Pakistan and later released.The Pakistani Aircraft F-16 or JF-17 was also shot down (F-16 claimed by India) which Pakistan denies without sizable evidence