Nasa's knowledge is a big help to the people around him, but even he's not sure about the list Kaname finds on the internet that describes the symbolism behind different kisses.
the history of mathematicians, 
who were all seeking answers.
تاريخ علماء الرياضيات الذين كانوا
.يبحثون عن الأجوبة
la storia dei matematici in cerca di risposte.
a história dos matemáticos,
que estavam todos em busca de respostas.
представляет историю математиков,
искавших ответы.