I loved my older brother dearly when we were small, but I hated it when people compared me to him.

I loved my older brother dearly when we were small, but...

People often referred to these opposing points of view as "the nature versus nurture" debate.

... as "the nature versus nurture" debate.

It was traditional for people to hand firstborn boys the family fortune.

It was traditional...

A child's chronological place in the family largely shapes their personality.

A child's personality...

People had adopted them from the same city, Busan, in South Korea.

..., Busan, in South Korea.

They eventually launched a crowdfunding company to finance a documentary.

...to finance a documentary.

Thousands of fascinated "fans" are still following their story.

... by thousands of fascinated "fans".

We can be sure that people will publicise more incredible reunions in the future.

We can be sure that .... in the future.

These differences become more apparent when adoptive families from different socioeconomic backgrounds have raised twins.

These differences become more apparent when ... from different socioeconomic backgrounds.

With that amount of data, people can hardly dispute the results of their research.

With that amount of data, ...