When trying to use execute on lightning, it yields no result.
To recreate this big place a Repeating commandblock with the command
/execute @e[type=LightningBolt] ~ ~ ~ say fooand power the commandblock.
Then summon a LightningBolt via
/summon LightningBoltand you will see that there is no output or "foo" from the lightning
Probably intended as
LightningBoltis no "real" entity.Else probably duplicate of MC-47832