Question: Which side of the Honolulu Rail Transit link is located in Honolulu County, Hawaii?

Context paragraphs:
Daniel K. Inouye International Airport station: The Honolulu International Airport Station is a planned rapid transit station along Ala Auana Street serving the Daniel K. Inouye International Airport along the Honolulu Rail Transit line in Honolulu, Hawaii.

Kapolei, Hawaii: Kapolei is a master-planned community in Honolulu County, Hawaii, United States, on the island of Oahu.  It is colloquially known as the "second city" of Oahu, in relation to Honolulu.  Officially, it is a census-designated place (CDP) within the consolidated city-county of Honolulu.

Central Connector, Auckland: The Central Connector (formerly called Auckland Central Transit Corridor), is a bus route (mooted as a potential future light rail route) between Britomart Transport Centre in the Auckland CBD, New Zealand, and the commercial suburb of Newmarket.  It has some aspects of a bus rapid transit link.  It was expected to improve journey times by about 14 minutes for around 2,600 buses per week, about 65,000 passengers daily.  Work began in April 2008 and is now finished.

Honolulu County, Hawaii: Honolulu County (officially known as the City and County of Honolulu, formerly Oahu County) is a consolidated city–county located in the U.S. state of Hawaii.  The city–county includes both the city of Honolulu (the state's capital and largest city) and the rest of the island of Oʻ ahu, as well as several minor outlying islands, including all of the Northwestern Hawaiian Islands (islands beyond Niihau) except Midway Atoll.

Downtown Seattle Transit Tunnel: The Downtown Seattle Transit Tunnel (DSTT), also referred to as the Metro Bus Tunnel, is a 1.3 mi pair of public transit tunnels in Seattle, Washington, United States.  The tunnel serves Downtown Seattle, running west under Pine Street from 9th Avenue to 3rd Avenue, and south under 3rd Avenue to South Jackson Street.  It was used only by buses from its opening in 1990 until 2005, and since 2009 it has been shared by buses and light rail.  The double-track tunnel and its stations, except Convention Place, constitute parts of the Central Link light rail line, which continues north to the University of Washington station and south through the Rainier Valley to Seattle–Tacoma International Airport as part of Sound Transit's Link light rail network.  Its five stations are also served by King County Metro and Sound Transit Express buses that leave the tunnel north via Interstate 5, south via the SODO Busway, or east via Interstate 90.  The DSTT is the busiest section of the Link light rail network, with an average of over 10,000 weekday boardings.  It is owned by King County Metro and shared with Sound Transit through a joint-operating agreement signed in 2002.  The Downtown Seattle Transit Tunnel is one of two tunnels in the United States shared by buses and trains, the other being the Mount Washington Transit Tunnel in Pittsburgh, and is the only one in the United States with shared stations.

Honolulu Rail Transit: The Honolulu Rail Transit Project (also known as the Honolulu High-Capacity Transit Corridor Project) is an urban rail rapid transit system under construction in Honolulu County, Oahu, Hawaii.  The mostly-elevated system features design elements from both heavy rail systems and light metros, with a commuter rail-like design incorporated into trains and suburban stations.  It will become the first large-scale publicly run metro system in the United States to feature platform screen doors.  The first phase of the project, linking East Kapolei and Aloha Stadium, is scheduled to open in late 2020, while the second phase of the project continuing the line to Ala Moana Center across urban Honolulu is due to open in December 2025.

East Link Extension (Sound Transit): The East Link Extension is a planned Sound Transit Link Light Rail line, spanning about 14 mi from Downtown Seattle eastward to the city of Redmond.  Funding for construction of the segment between Downtown Seattle and Overlake Transit Center was approved by voters in November 2008, while the final segment between Overlake Transit Center and Downtown Redmond was approved in 2016 as part of the Sound Transit 3 ballot measure.  Construction of East Link began in 2016, and the line is scheduled to open for service to Overlake in 2023.  An extension to downtown Redmond will open in 2024.  An estimated 50,000 passengers will use East Link every day by 2030.

Northwestern Hawaiian Islands: The Northwestern Hawaiian Islands or the Leeward Islands are the small islands and atolls in the Hawaiian island chain located northwest (in some cases, far to the northwest) of the islands of Kauai and Niihau.  Politically, they are all part of Honolulu County in the U.S. state of Hawaii, except Midway Atoll, which is grouped as one of the United States Minor Outlying Islands.  The United States Census Bureau defines this area, except Midway, as Census Tract 114.98 of Honolulu County.  Its total land area is 3.1075 sqmi .  All the islands except Nihoa are north of the Tropic of Cancer, making them the only islands in Hawaii that lie outside the tropics.

Kunia Camp, Hawaii: Kunia Camp (also called Kunia) is an unincorporated community on the island of Oahu in Honolulu County, Hawaii, United States.  It lies along Hawaii Route 750 northwest of downtown Honolulu, the county seat of Honolulu County.  Its elevation is 883 feet (269 m).  Although it is unincorporated, it has a post office (under the name of Kunia), with the ZIP code of 96759.

Mākaha, Hawaii: Mākaha (Hawaiian for “fierce” or “savage”) is a census-designated place (CDP) in Honolulu County, Hawaiʻ i, United States.  It’s a town located along the Pacific Ocean, west of the Mākaha Valley, and at the foot of Mt. Ka'ala in the Wai’anae Mountain Range.  It is the last of the leeward towns on O'ahu.  North of Mākaha is little development, i.e. no towns, no gas stations, or restaurants.  The population of Mākaha was 8,278 at the 2010 census.  It is located 35 miles northwest of Honolulu, but is a part of Honolulu County.

Supporting paragraphs: Honolulu Rail Transit Kapolei, Hawaii
Answer: East Kapolei