YOU SAID:

My sister has a friend whos friend has a friend that has a pet

INTO JAPANESE

私の妹は、友人がペットを持っている友人を持っている友人を持っています

BACK INTO ENGLISH

My sister has a friend who has a friend who has a pet

INTO JAPANESE

私の妹には、ペットを飼っている友達がいる友達がいます。

BACK INTO ENGLISH

My sister has a friend who has a pet.

INTO JAPANESE

妹は仕事を持っています。

BACK INTO ENGLISH

My sister has a job.

INTO JAPANESE

妹は仕事を持っています。

BACK INTO ENGLISH

My sister has a job.