This programming language is said to be Turing complete.

His performance was perfect and without blemish.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.

He is immersed in the study of panmagic squares.

This fish is completely farmed, and no capture is done in the natural environment.

He has arachnophobia, and he panics as soon as he sees a spider.

You can find a brittle star on the sea floor.

The legend of the jorōgumo has been passed down from ancient Japan.

The golden spider is a type of spider often seen in rice fields and fields in Japan.

There are many cellar spiders in this room.