You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "The probable father of Cu Chulainn's is sometimes interpreted as what?" whose answer is as a sun god, a storm god or a sky god.
Each document should contain about 30 words, and these documents should contain useful information.

Query: probable father of Cu Chulainn
Useful Output:

Doc 1: For starters, Cú Chulainn's mother was Dechtire, the daughter of the druid Cathbad and the demigod Maga (Maga's father was the Irish god of love
Doc 2: Today, I want to talk about a common theory – the idea that Cú Chulainn is not merely the son of Lug mac Ethlenn, but an incarnation of him.
Doc 3: Cú Chulainn's mother, Deichtine, went around with some of the kingdom of Ulster's finist knights. They ended up staying at a house one night
Doc 4: In the earliest version of the legend of Cú Chulainn, Sualtam is genuinely his father. However, in later versions, Cú Chulainn's true father is
Doc 5: Lugh & Birth​​ Cú Chulainn's father is Lugh the Celtic god of the sun and light who became a heroic figure in Irish epic myths like the Cath