You will be given a definition of a task first, then some input of the task.
This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.

Passage: The Independent State of Samoa ( Samoan: Malo Sa 'oloto Tuto 'atasi o Samoa, IPA: [samoa]), commonly known as Samoa (Samoan: Samoa) and formerly known as Western Samoa, is a Unitary Parliamentary Republic with eleven administrative divisions. The two main islands are Savai'i and Upolu with four smaller islands surrounding the landmasses. The capital city is Apia. The Lapita people discovered and settled the Samoan islands around 3,500 years ago. They developed a unique language and cultural identity.
Output:
What was Lapita formerly known as?