YOU SAID:
I have a friend that have a friend that went to Europe
INTO JAPANESE
ヨーロッパに行った友達がいる友達がいます
BACK INTO ENGLISH
I have friends who have gone to Europe
INTO JAPANESE
ヨーロッパに行った友達がいます
BACK INTO ENGLISH
I have a friend who went to Europe
INTO JAPANESE
ヨーロッパに行った友達がいます
BACK INTO ENGLISH
I have a friend who went to Europe
That didn't even make that much sense in English.