What mean "五・七・五" ?
What mean "五・七・五" ?

Or what can it mean?
Maybe it is the common phrase that have some inner meaning?

Question

What mean "五・七・五" ?
What mean "五・七・五" ?

Or what can it mean? 
Maybe it is the common phrase that have some inner meaning?

Answer

This is a Japanese poems called  “HAIKU”.  They are  short verse of 17 syllables in three metrical sections of 5-7-5 syllables and closely related to the seasons of the year.
ex)This is a famous HAIKU in Japan
A ki hu ka shi (5) - to na ri wa na ni wo (7)- su ru  hi to zo(5)
あき（秋）ふか（深）き　となり（隣）は　なに（何）を　する　ひと（人）ぞ
Deep autumn, How does my neighbor live, I wonder?