An old person was playing with his grandchild in the park.

An old person was walking in the park.

He is known as an expert in gerontology.

My grandfather is interested in gerontology.

My grandmother lives in a nursing home.

My grandmother participates in the local old people's club every week.

We respect Japanese culture.

We are going on a trip tomorrow.

When I first met her, I introduced myself saying, 'I am Japanese.'

We prioritize customer satisfaction above all else.