Cluster 1

Cluster 3

Cluster 4

Cluster 5

Challenge

Technology

Efficiency

Solution

Present situation

Development

Method

Problem

Change

Universe

Japan

Design

Value

Research

Power generation

Employ

Realization

Robot

Nature

Application

Cluster 2

People

Healthcare

Present

Goal

Disaster

Cost

Think

Career

Earthquake

Light

Knowledge

Study

Human beings

Live body

Necessary

Plan

Conduct

Learn

Automobile

Use

Fuel

Relationship

Usage

Life

Possibility