Among polyandrous animals, there are species where one female mates with multiple males.

He is recognized as the top person in that field.

Three days ago, I went to Tokyo.

He was diagnosed with amyotrophic lateral sclerosis.

He is doing a special exercise to strengthen his extensor carpi radialis brevis.

The extensor carpi radialis longus is a part of the arm muscles and helps in the movement of the wrist.

He explained the importance of studying while young, saying 'If you do not study when you are young, it will be difficult to learn when you are old.'

World War I was a large-scale war that lasted from 1914 to 1918.

He was anxious about starting a new business, but I encouraged him by saying, 'Even a journey of a thousand miles begins with a single step.'

Ogura Hyakunin Isshu is one of the classical literatures of Japan.