Occitan, also known as lenga d'òc by its native speakers, is a Romance language. It is spoken in southern France, Italy's Occitan Valleys, Monaco, and Spain's Val d'Aran; collectively, these regions are sometimes referred to as Occitania. Occitan is also spoken in the linguistic enclave of Guardia Piemontese (Calabria, Italy). However, there is controversy about the unity of the language, as some think that Occitan is a macrolanguage. Others include Catalan in this family, as the distance between this language and some Occitan dialects (such as the Gascon language) is similar to the distance among different Occitan dialects. In fact, Catalan was considered an Occitan dialect until the end of the 19th century. 

Today, Occitan is an official language in Catalonia, where a subdialect of Gascon known as Aranese is spoken in the Val d'Aran. Occitan's closest relative is Catalan. Since September 2010, the Parliament of Catalonia has considered Aranese Occitan to be the officially preferred language for use in the Val d'Aran. 

Across history, the terms Limousin ("Lemosin"), Languedocien ("Lengadocian"), Gascon, and later Provençal ("Provençal", "Provençau" or "Prouvençau") have been used as synonyms for the whole of Occitan; nowadays, "Provençal" is understood mainly as the Occitan dialect spoken in Provence.
What is Occitan the official language of?
What subdialect is spoken there?
What is Occitan known as by native speakers?
What type of language is it?
Where is it spoken?
Where else?
Anywhere else?
Where?
What are these areas sometimes called?
Is there controversy about the language?
What kind?
What do some think?
What about others?
What do they think it is similar to?
Catalonia
Occitan is an official language in Catalonia
Aranese
where a subdialect of Gascon known as Aranese
lenga d'òc
 also known as lenga d'òc by its native speakers
a Romance language
is a Romance language
in southern France
It is spoken in southern France
Italy's Occitan Valleys
Italy's Occitan Valleys
yes
Monaco, and Spain's Val d'Aran
Monaco and Spain's Val d'Aran
Monaco, and Spain's Val d'Aran
Occitania
collectively, these regions are sometimes referred to as Occitania
yes
However, there is controversy about the unity of the language, as some think that Occitan is a macrolanguage. 
about the unity of the language
about the unity of the language,
that Occitan is a macrolanguage
that Occitan is a macrolanguage.
some include Catalan in this family
 Others include Catalan in this family
the distance among different Occitan dialects
the distance among different Occitan dialects