Given the task definition and input, reply with output. In this task, you are given an article. Your task is to summarize the article in a sentence.

Only a third (33%) of people believed being able to speak Welsh made someone Welsh, according to the study by internet-based market research firm YouGov.
In a survey of more than 1,000 people in Wales, more than 90% thought being born in the country made someone Welsh.
Second on the list was having two Welsh parents, with 87% backing the option.
The only other factors to gain majority support were "growing up in Wales" (68%) and having a Welsh parent (61%).
Only about four in 10 people believed someone "considering themselves Welsh" made them Welsh.
Matthew Smith, of YouGov, said: "What makes a person Welsh is a question that raged for a while - especially in light of sports stars representing the country despite seemingly having light links with it.
"However, it is clear from our research that what makes a person Welsh is quite a broad church.
"The key thing seems to be a person's heritage - be it being born in Wales, having a Welsh parent or growing up here."
YouGov carried out online interviews with 1,005 adults aged 18 or over in Wales between 23 and 27 September.

Most Welsh people think you have to be born in Wales to be Welsh, new research has said.