Input: Article: As of 2010 the Catholic Church had the highest number of adherents as a single denomination in the Boston-Cambridge-Newton Metro area, with more than two million members and 339 churches, followed by the Episcopal Church with 58,000 adherents in 160 churches. The United Church of Christ had 55,000 members and 213 churches. The UCC is the successor of the city's Puritan religious traditions. Old South Church in Boston is one of the oldest congregations in the United States. It was organized in 1669 by dissenters from the First Church in Boston (1630). Notable past members include Samuel Adams, William Dawes, Benjamin Franklin, Samuel Sewall, and Phillis Wheatley. In 1773, Adams gave the signals from the Old South Meeting House that started the Boston Tea Party.

Now answer this question: How many Catholic churches were in the Boston area in 2010?

Output: 339

Input: Article: Beginning with the Paris Exposition of 1878, the instrument's popularity rebounded. The Exposition was one of many stops for a popular new performing group the Estudiantes Espanoles (Spanish Students). They danced and played guitars, violins and the bandurria, which became confused with the mandolin. Along with the energy and awareness created by the day's hit sensation, a wave of Italian mandolinists travelled Europe in the 1880s and 1890s and in the United States by the mid-1880s, playing and teaching their instrument. The instrument's popularity continued to increase during the 1890s and mandolin popularity was at its height in "early years of the 20th century." Thousands were taking up the instrument as a pastime, and it became an instrument of society, taken up by young men and women. Mandolin orchestras were formed worldwide, incorporating not only the mandolin family of instruments, but also guitars, double basses and zithers.

Now answer this question: What were formed worldwide that incorporated the mandolin famiy of instruments and other instruments as well?

Output: Mandolin orchestras

Input: Article: Long distance migrants are believed to disperse as young birds and form attachments to potential breeding sites and to favourite wintering sites. Once the site attachment is made they show high site-fidelity, visiting the same wintering sites year after year.

Now answer this question: What do young birds form attachments to?

Output:
potential breeding sites