Clean up language:ISO639-3:id (AfPO:0000567) annotation

[anitacaron]

When working on issue #56, I found some misuse of the language:ISO639-3:id annotation. Is this correct? If there's more than one ISO639-3, I would split that into many annotations instead of only one.

term	label	iso639
AfPO:0000067	"Bassa"	"bsq\nbas"
AfPO:0000104	"Fulani"	"ful – inclusive code – Fulah\nIndividual codes:\nfuc – Pulaar (Senegambia, Mauritania)\nfuf – Pular (Guinea, Sierra Leone)\nffm – Maasina Fulfulde (Mali, Ghana)\nfue – Borgu Fulfulde (Benin, Togo)\nfuh – Western Niger (Burkina, Niger)\nfuq – Central–Eastern Niger (Niger)\nfuv – Nigerian Fulfulde (Nigeria)\nfub – Adamawa Fulfulde (Cameroon, Chad, Sudan)\nfui – Bagirmi Fulfulde (CAR)"
AfPO:0000113	"Oromo"	"Oromo language is divided into five languages in the ISO 639-3 listing:\n[gax] – Borana–Arsi–Guji–Walagaa Oromo\n[hae] – Eastern Oromo\n[orc] – Orma\n[gaz] – West Central Oromo\n[ssn] – Waata"
AfPO:0000127	"Mijikenda"	"coh – Chonyi\ndig – Digo\ndug – Duruma\nnyf – Giryama\nseg – Segeju"
AfPO:0000203	"Akan"	"aka – inclusive code\nIndividual codes:\nfat – Fante\ntwi – Twi\nwss – Wasa"
AfPO:0000229	"Balanta"	"ble – Balanta-Kentohe\nbjt – Balanta-Ganja"
AfPO:0000240	"Sena"	"Variously:\nseh – Mozambiquean an Sena\nswk – Malawian Sena\nbwg – Barwe"
AfPO:0000263	"!Kung"	"Variously:\nvaj – Northern ǃKung\nknw – Ekoka ǃKung\nktz – Southern ǃKung"
AfPO:0000283	"Baka_Cameroon"	"Variously:\nbkc – Baka\ngdi – Gundi (Ngundi)\ngnz – Ganzi\nbme – Massa (Limassa)"
AfPO:0000284	"Mbuti"	"kon – inclusive code\nIndividual codes:\nkng – Koongo\nldi – Laari\nkwy – San Salvador Kongo (South)\nyom – Yombe"
AfPO:0000292	"Kongo"	"kon – inclusive code\nIndividual codes:\nkng – Koongo\nldi – Laari\nkwy – San Salvador Kongo (South)\nyom – Yombe"
AfPO:0000293	"Luba"	"lua\nlub\nsng"
AfPO:0000303	"Ngbandi"	"Variously:\nngb – Northern Ngbandi\nnbw – Southern Ngbandi\nyky – Yakoma\ndeq – Dendi\nmgn – Mbangi\ngyg – Gbayi"
AfPO:0000331	"Khoekhoe"	"Either:\nnaq – Khoekhoe, Nama\nhgm – Haiǁom"
AfPO:0000341	"Ovambo"	"Variously:\nkua – Kwanyama\nndo – Ndonga\nkwm – Kwambi\nlnb – Mbalanhu\nnne – Ngandjera"
AfPO:0000373	"Bari"	"bfa – Bari\nkeo – Kakwa\nmqu – Mandari"
AfPO:0000376	"Turkana"	"tuv – Turkana\nnnj – Nyangatom"
AfPO:0000382	"Hill Nubian"	"ghl – Ghulfan\nkdu – Kadaru\nkko – Karko\nwll – Wali\ndil – Dilling\ndrb – Dair\nelh – El Hugeirat"
AfPO:0000416	"Dogon"	"dbg\tDogon, Dogul Dom\ndbt\tDogon, Ben Tey\ndbu\tDogon, Bondum Dom\ndbw\tDogon, Bankan Tey\ndds\tDogon, Donno So\ndgb\tDogon, Bunoge\ndjm\tDogon, Jamsay\ndmb\tDogon, Mombo\ndti\tDogon, Ana Tinga\ndtk\tDogon, Tene Kan\ndtm\tDogon, Tomo Kan\ndto\tDogon, Tommo So\ndts\tDogon, Toro So\ndtt\tDogon, Toro Tegu\ndtu\tDogon, Tebul Ure\ndym\tDogon, Yanda Dom\nnzz\tDogon, Nanga Dama\ntde\tDogon, Tiranige Diga"
AfPO:0000427	"Urhobo"	"urh\nevh"
AfPO:0000437	"Hutu"	"Variously:\nkin – Rwanda\nrun – Rundi\nhaq – Ha\nsuj – Shubi\nhan – Hangaza\nvin – Vinza"
AfPO:0000438	"Tutsi"	"Variously:\nkin – Rwanda\nrun – Rundi\nhaq – Ha\nsuj – Shubi\nhan – Hangaza\nvin – Vinza"
AfPO:0000490	"Masaba"@en	"Variously:\nmyx – Masaba (Gisu, Kisu, Dadiri, Buya)\nbxk – Bukusu (Tachoni)\nlts – Tachoni"
AfPO:0000546	"Krahn"@en	"kqo\nkrw"
AfPO:0000547	"Grebo"@en	"grb – inclusive code\nIndividual codes:\ngrj – Southern (incl. Jabo)\ngrv – Central\ngbo – Northern\ngec – Gboloo\ngry – Barclayville\noub – Glio-Ubi"
AfPO:0000548	"Kulango"@en	"Either:\nnku – Bouna\nkzc – Bondoukou"
AfPO:0000549	"Limba"@en	"Either:\nlia – West–Central\nlma – East"
AfPO:0000564	"Nuna"@en	"Either:\nnuv – Northern Nuni\nnnw – Southern Nuni"
AfPO:0000574	"Kissi"	"kss\nkqs"

---

In some cases, I could find two AfPO terms using the same value for the annotation. Is that correct?

iso639	term	label
"Variously:\nkin – Rwanda\nrun – Rundi\nhaq – Ha\nsuj – Shubi\nhan – Hangaza\nvin – Vinza"	AfPO:0000437	"Hutu"
"Variously:\nkin – Rwanda\nrun – Rundi\nhaq – Ha\nsuj – Shubi\nhan – Hangaza\nvin – Vinza"	AfPO:0000438	"Tutsi"
"brl"	AfPO:0000438	"Tutsi"
"brl"	AfPO:0000573	"Birwa"
"ewo"	AfPO:0000290	"Beti-Pahuin"
"ewo"	AfPO:0000572	"Ewondo"
"fak"	AfPO:0000128	"Fang"
"fak"	AfPO:0000290	"Beti-Pahuin"
"kon – inclusive code\nIndividual codes:\nkng – Koongo\nldi – Laari\nkwy – San Salvador Kongo (South)\nyom – Yombe"	AfPO:0000284	"Mbuti"
"kon – inclusive code\nIndividual codes:\nkng – Koongo\nldi – Laari\nkwy – San Salvador Kongo (South)\nyom – Yombe"	AfPO:0000292	"Kongo"
"mgo"	AfPO:0000295	"Moghamo"
"mgo"	AfPO:0000298	"Ngamambo"
"nub"	AfPO:0000190	"Nubian Eastern"
"nub"	AfPO:0000358	"Nubian Northern"
"nya"	AfPO:0000140	"Chewa"
"nya"	AfPO:0000242	"Chipeta"

[Melek-C]

Hi @anitacaron, @abenkahla is working on it.