Question: How many islands are in the island group where Steven Raymond Christian was born ?

Context articles: Joinville Island group
Melchior Islands
Pearson Isles
Steve Christian
Okinawa Islands
Harper Islands
Hunter Island Group Important Bird Area
Pitcairn Islands
Skrova
James Ross Island group

Joinville Island group is a group of antarctic islands, lying off the northeastern tip of the Antarctic Peninsula, from which Joinville Island group is separated by the Antarctic Sound.
 Joinville Island, located at , is the largest island of the Joinville Island group.
 Immediately north of Joinville Island and separated by Larsen Channel lies D'Urville Island, Antarctica, the northernmost island of the Joinville Island group, being located at .
The Melchior Islands are a group of many low, ice-covered islands lying near the center of Dallmann Bay in the Palmer Archipelago, Antarctica.
 They were first seen but left unnamed by a German expedition under Eduard Dallmann, 1873–74.
 The islands were resighted and roughly charted by the Third French Antarctic Expedition under Jean-Baptiste Charcot, 1903–05.
 Charcot named what he believed to be the large easternmost island in the group "Île Melchior" after Vice Admiral Jules Melchior of the French Navy, but later surveys proved Charcot's Île Melchior to be two islands, now called Eta Island and Omega Island.
 The name Melchior Islands has since become established for the whole island group now described, of which Eta Island and Omega Island form the eastern part, while the Sigma Islands mark the northern limit of the islands.
 The group was roughly surveyed in 1927 by Discovery Investigations personnel in the "RRS Discovery", and was resurveyed by Argentine expeditions in 1942 and 1943, and again in 1948.
Pearson Isles (also called the Pearson Islands, Pearson Group and Pearson Archipelago) is an island group located in the Australian state of South Australia about 65 km to 72 km west south-west of Cape Finniss on the west coast of Eyre Peninsula within the larger island group, the Investigator Group.
 The group was discovered and named by Matthew Flinders on 13 February 1802.
 The group has four members - Pearson Island, a pair of islands known as the Veteran Isles and Dorothee Island.
 The island group has enjoyed protected area status starting in 1916 and since 2011, it has been part of the Investigator Group Wilderness Protection Area.
 The island group is notable as a venue for scientific research.
Steven Raymond Christian (born 26 June 1951, Pitcairn Island) is a political figure and convicted child rapist from the Pitcairn Islands.
The Okinawa Islands (沖縄諸島 , "Okinawa Shotō" ) are an island group in Okinawa Prefecture, Japan, and are the principal island group of the prefecture.
 The Okinawa Islands are part of the larger Ryukyu Islands group, and are located between the Amami Islands of Kagoshima Prefecture to the northeast and the Sakishima Islands of Okinawa Prefecture to the southwest.
Harper Islands is a small uninhabited island group with an area of 8 km2 , which is part of the Baffin Island group located in the Canadian Arctic Archipelago in the territory of Nunavut.
 The group lies at the confluence of Frobisher Bay and the Labrador Sea.
 Other islands also in the immediate vicinity of the tip of Hall Peninsula, but further north, include Lefferts, Bear, Little Hall, and Hudson islands.
The Hunter Island Group Important Bird Area comprises several islands in the Hunter Island Group and Trefoil Island Group lying off the north-western coast of Tasmania, Australia.
The Pitcairn Islands ( ; Pitkern: "Pitkern Ailen "), officially Pitcairn, Henderson, Ducie and Oeno Islands, are a group of four volcanic islands in the southern Pacific Ocean that form the last British Overseas Territory in the Pacific.
 The four islandsPitcairn, Henderson, Ducie, and Oenoare spread over several hundred miles of ocean and have a total land area of about 47 sqkm .
 Only Pitcairn, the second-largest island that measures about 3.6 km from east to west, is inhabited.
Skrova is an island group and village area in the municipality of Vågan in Nordland county, Norway.
 The Skrova island group is located in the Vestfjorden, south of the islands of Austvågøya, Litlmolla, and Stormolla.
 It lies about 9 km south of the town of Svolvær and has a population of 237, according to data from 2005.
 The largest island in the group is "Storskrova" and the island of "Heimskrova" is where most of the population is located.
 Skrova Lighthouse is located in the southwestern part of the island ground.
 It was established in 1922 and not fully automated until 2005.
 There is also a meteorological weather station in the island group.
The James Ross Island group is a group of islands located close to the northeastern tip of the Antarctic Peninsula.
 The largest islands in the group are James Ross Island, Snow Hill Island, Vega Island, and Seymour Island.
 The islands lie to the south of the Joinville Island group.
 The groups contains several scientific bases, notably Marambio Base, and numerous important palaeontological sites.