Question

。

最後の文の
once they had served their customers they couldn't recall who had ordered what, even a few minutes later.

のところって

once they had served their customers （ここにカンマとかないのに）they couldn't recall who had ordered what, even a few minutes later.

違う文として扱えるんですか、？（customersの修飾とかにならないってことです）

the Russian psychologist Bluma Zeigarnik (1901-88) observed restaurant staff at work,
and found that although they could easily memorize/food and drink orders when their
customers ordered, once they had served their customers they couldn't recall who had
ordered what, even a few minutes later. From this, Zeigarnik concluded that we

Answer 1

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らい

カンマがあるのが良く見る形ですが、ないのもあります。修飾しているかどうかは文脈で判断するしかないです

。

そうなんですね！文脈判断がんばります！