In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Ex Input:
Passage: The pair came to public attention when an Inverness-based fan sent their demo to the English band the Housemartins, who were impressed enough to invite the Proclaimers on their 1986 United Kingdom tour. The exposure of the tour won them a January 1987 appearance on the British pop music television programme The Tube on Channel Four; "Letter from America" peaked at number three in the UK Singles Chart, while the album This Is the Story went gold. The follow-up album Sunshine on Leith featured the singles "I'm Gonna Be (500 Miles)", which went to number one in Australia and New Zealand, and "I'm On My Way". They had a hit with their EP King of the Road, which reached number nine in the UK in 1990. "I'm Gonna Be (500 Miles)" belatedly peaked at number three on the Billboard Hot 100 in August 1993, after appearing in the movie Benny & Joon, becoming their only charted single in the United States. After seven low-profile years, they released their comeback album Persevere in 2001.
 Link Information: The band was formed in late 1983 by Paul Heaton (vocals) and Stan Cullimore (guitar) Question: Who is the founder of the band that received a demo of the Proclaimers sent in by a fan?

Ex Output:
Answer: Stan Cullimore


Ex Input:
Passage: Booking Holdings and Expedia Group, both online travel agencies, are the largest travel agencies on the list of top earning travel companies. Travel agencies can be multinational companies, referred to as "multiples" in the United Kingdom. They can also be medium-sized organizations, referred to as "miniples" in the United Kingdom, or can be independent, small companies. They can be structured as a limited liability company, a sole proprietorship, or can be set up as a host, franchising, or consortium structure, such as in the case of CWT. A traditional travel agent may work for a travel agency or work freelance. Helloworld Travel is an example of a franchised travel agency, giving agents access to internal systems for product and bookings. While most point-to-point travel is now booked online, traditional agents specialize in niche markets such as corporate travel, luxury travel, cruises, complicated and important trips, and specialty trips. Other niche markets include travelers with disabilities, travelers over the age of 60, women traveling alone, LGBT tourism, the needs of residents in an upmarket commuter town or suburb, or a particular group interested in a similar activity, such as a sport. Examples include StudentUniverse and STA Travel, which specialize in youth travel, or CWT, which caters to corporate travel. Many use telecommuting to reduce overhead, and/or provide concierge services. Agents can act as "travel consultants" with flawless knowledge of destination regions and specialize in topics like nautical tourism or cultural tourism. Many traditional agents prefer the term "travel advisor" as opposed to "travel agent" to emphasize their advice, expertise, and connections that are of great value. Outbound travel agencies offer multi-destinations; inbound travel agencies are based in the destination and deliver an expertise on that location.
 Link Information: none Question: Which company has a higher overall net profit the last five years between Booking Holdings and Expedia Group?

Ex Output:
Answer: none


Ex Input:
Passage: The San Francisco Estuary is a major stop on the Pacific flyway for migrating waterfowl. Yet little is known about the flow of carbon in or out of the estuary via birds. Millions of waterfowl annually use the bay shallows as a refuge. Most of the birds are dabbling ducks that feed on submerged aquatic vegetation. Diving ducks (such as scaups) feed on epibenthic organisms like C. amurensis, representing a possible flow of carbon from that otherwise dead end. Two endangered species of birds are found here: the California least tern and the California clapper rail. Exposed bay muds provide important feeding areas for shorebirds, but underlying layers of bay mud pose geological hazards for structures near many parts of the bay perimeter. Piscivorous birds such as cormorants and pelicans also inhabit the estuary, but their trophic impact remains poorly studied.
 Link Information: none Question: Approximately how many California least tern remain?

Ex Output:

Answer: none