Question: What is the approximate area of this country where Lobelia columnaris can be found (other than Cameroon)?

Context paragraphs:
Kapatagan, Lanao del Norte: Kapatagan has a total land area of 25,048.41 hectares which include the area that is now being contested by the Municipality of Lala with an approximate area of 759 hectares.

Equatorial Guinea: Equatorial Guinea (Spanish: "Guinea Ecuatorial" , French: "Guinée équatoriale" , Portuguese: "Guiné Equatorial" ), officially the Republic of Equatorial Guinea (Spanish: "República de Guinea Ecuatorial" , French: "République de Guinée équatoriale" , Portuguese: "República da Guiné Equatorial" ), is a country located in Central Africa, with an area of 28000 km2 .  Formerly the colony of Spanish Guinea, its post-independence name evokes its location near both the Equator and the Gulf of Guinea.  Equatorial Guinea is the only sovereign African state in which Spanish is an official language.  s of 2015 , the country had an estimated population of 1,222,245.

Lobelia columnaris: Lobelia columnaris is a species of the Campanulaceae family.  It is the only giant Lobelia occurring in West Africa and is found in Cameroon and Equatorial Guinea.  Its natural habitat is subtropical or tropical dry forests.

Piiukaarelaid: Piiukaarelaid (alternatively: Piiukaare laid and Piiulaid) is a small, uninhabited islet in the Baltic Sea belonging to the country of Estonia.  Piiukaarelaid has an approximate area of 8.5 hectares and a circumference of 1.8 kilometers and is administered by the village of Mereäärse, Varbla Parish, Pärnu County.  The islet is fully protected as part of the Varbla Islets Landscape reserve (Estonian: "Varbla laidude maastikukaitseala"), and is an important breeding site for 54 species of birds, including: the velvet scoter, the little tern, the red-backed shrike, the curlew, the common tern, the Arctic tern, the redshank, the northern shoveler, the gadwall, the black-tailed godwit, the Greylag goose the tufted duck, the mute swan, the common gull, the goosander, the common eider, the lapwing, and others.

List of protected areas established in 2012: Below is a list (in the form of a (statistical) table) of all of the protected areas that were officially established as such in the year of 2012.  The table contains each place's/park's/monument's name, country in which the corresponding place/park/monument is located and the total approximate area that the corresponding place/park/monument covers.

La Raya: La Raya de Santiago, or simply La Raya, is a village or "pedanía" (suburban district) of the municipality of Murcia, in Región de Murcia (Spain).  There live a population of 2,289 inhabitants (INE 2004) and it has an approximate area of 2,901 km².  It is situated in the central area of the orchard of Murcia, on the right bank of river Segura, 4 km from Murcia city centre and 55 metres above sea level.

Port of Tripoli (Lebanon): The Port of Tripoli (Arabic: مرفأ طرابلس‎ ‎ ) is the 2nd major port in Lebanon.  The port covers an approximate area of 3 km2 , with a water area of 2.2 km2 , and the land area composing of 320000 m2 , and a 420000 m2 dump area adjacent to the current port, reserved for the future Container Terminal and Free Market Zone.

Kłodzko Land: Kłodzko Land (Czech: "Kladsko" ; German: "Glatzer Land" ; Polish: "ziemia kłodzka" ) is a historical region in southwestern Poland, which belongs to this country since 1945.  Geographically speaking, Kłodzko Land (with an approximate area 1,640 km) consists of the Kłodzko Valley surrounded by parts of the Sudetes mountains, which together forms a significant jut into neighbouring Czech area.  The land, named after its capital city of Kłodzko, today forms Kłodzko County of the Lower Silesian Voivodeship.

Chuk Yuen: Chuk Yuen () or Chuk Un was a village and an area in New Kowloon of Hong Kong.  The area located in the approximate area of present-day Wong Tai Sin.  The name now also refers to two public housing estates, Chuk Yuen North and Chuk Yuen South Estates.

Ismenius Lacus quadrangle: The Ismenius Lacus quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program.  The quadrangle is located in the northwestern portion of Mars’ eastern hemisphere and covers 0° to 60° east longitude (300° to 360° west longitude) and 30° to 65° north latitude.  The quadrangle uses a Lambert conformal conic projection at a nominal scale of 1:5,000,000 (1:5M).  The Ismenius Lacus quadrangle is also referred to as MC-5 (Mars Chart-5).  The southern and northern borders of the Ismenius Lacus quadrangle are approximately 3065 km and 1500 km wide, respectively.  The north-to-south distance is about 2050 km (slightly less than the length of Greenland).  The quadrangle covers an approximate area of 4.9 million square km, or a little over 3% of Mars’ surface area.  The Ismenius Lacus quadrangle contains parts of Acidalia Planitia, Arabia Terra, Vastitas Borealis, and Terra Sabaea.

Supporting paragraphs: Lobelia columnaris Equatorial Guinea
Answer: 28000 km2