instruction:
In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
question:
Passage: Diagnosis of MCC begins with a clinical examination of the skin and lymph nodes. Following, definitive diagnosis of Merkel cell carcinoma (MCC) requires examination of biopsy tissue to identify its histopathologic features. An ideal biopsy specimen is either a punch biopsy or a full-thickness incisional biopsy of the skin including full-thickness dermis and subcutaneous fat. On light microscopy, MCC shows basaloid tumor nests with neuroendocrine features ("salt and pepper" chromatin, scarce cytoplasm, and brisk mitotic activity). In addition to standard examination under light microscopy, immunohistochemistry (IHC) is also generally required to differentiate MCC from other morphologically similar tumors such as small cell lung cancer, the small cell variant of melanoma, various cutaneous leukemic/lymphoid neoplasms, and Ewing's sarcoma. Similarly, most experts recommend longitudinal imaging of the chest, typically a CT scan, to rule out that the possibility that the skin lesion is a skin metastasis of an underlying small cell carcinoma of the lung. Once an MCC diagnosis is made, a sentinel lymph node biopsy is recommended as a part of the staging work-up needed to determine prognosis and subsequent treatment options.
 Link Information: Lymph nodes are present throughout the body, are more concentrated near and within the trunk, and are divided in the study of anatomy into groups. There are about 450 lymph nodes in the adult. Some lymph nodes can be felt when enlarged (and occasionally when not), such as the axillary lymph nodes under the arm, the cervical lymph nodes of the head and neck and the inguinal lymph nodes near the groin crease. Most lymph nodes lie within the trunk adjacent to other major structures in the body - such as the paraaortic lymph nodes and the tracheobronchial lymph nodes.

There are no lymph nodes in the central nervous system, which is separated from the body by the blood-brain barrier.

 Answer: under the arm
answer:
Which part of the body can lymph nodes be found in?


question:
Passage: John Wemyss was knighted in 1618 and created a Baronet of Nova Scotia in 1625. This included a charter to the barony of New Wemyss in that province of Canada. He was later advanced to the title of Earl of Wemyss and the patent was presented to him at Dunfermline personally by Charles I of England. John Wemyss was also a Privy Councillor, High Commissioner to the General Assembly of the Church of Scotland, and one of the Committee of the Estates. John Wemyss died in 1649 and was succeeded by his only son, David Wemyss, 2nd Earl of Wemyss. David Wemyss, the second earl spent a lifetime nurturing the resources of his estate, in particular his salt and coal mines. He also built a large harbour at Methil, Fife and greatly extended Wemyss Castle where he entertained Charles II of England in 1650 and 1651. He died in 1679 and was predeceased by his son so the estates fell to his daughter, Margaret Wemyss, 3rd Countess of Wemyss. Margaret married her cousin, James Wemyss, Lord Burntisland. Their son was David Wemyss, 4th Earl of Wemyss who succeeded his mother in 1705.
 Link Information: He died in 1679 Answer: 39
answer:
How old was Wemyss' son when he died in 1679?


question:
Passage: Yahya bin Hamza was a member of the Zaidi elite, but not of the dynasty of the Rassids that usually provided imams. He was a 13th-generation descendant of imam Ali ar-Ridha (d. 818). The old Yemeni imam al-Mahdi Muhammad bin al-Mutahhar had conquered large highland territories from the Rasulid Dynasty, including the commercially and politically important city San'a. After his demise in 1328, no less than four claimants for the imamate surfaced. Apart from Yahya, these included an-Nasir Ali bin Salah, Ahmad bin Ali al-Fathi, and the deceased imam's son al-Wathiq al-Mutahhar. Yahya emerged as the supreme figure and quickly secured San'a. With the city as his base, he waged war in the following years against Taiyabi Ismaili groups of the Hamdan tribe in the Wadi Dahr. The Rasulids were in no position to take back their lost lands in the Yemeni highland, leaving the Zaidi positions unthreatened. The imam was a prominent scholar who authored Al-Intisar, the most comprehensive Zaydiyyah law book, and Ad-Da'wa al-amma, a work encouraging struggle for the true faith. It was popularly said that the number of pages he wrote were equal to the days he lived. Al-Mu'ayyad Yahya died in 1346 (or, in another account, 1349), and was buried in Dhamar. On his death, San'a was seized by two Zaidi brothers, Ibrahim bin Abdallah and Da'ud bin Abdallah, who ruled as emirs and did not claim the imam title. Their family would control San'a until 1381.
 Link Information: none Answer: none
answer:

What caused the demise of the previous imam?