Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Leonardo Ghiraldini (born 26 December 1984 in Padua) is an Italian rugby union player for Leicester Tigers in the Aviva Premiership.
Which team does Leonardo Ghiraldini play for?

Vukadin Vukadinovic (born 14 December 1990) is a professional Serbian football midfielder currently playing for FC Fastav Zlin on loan from FK Baumit Jablonec.
For which sports team does Vukadin Vukadinović play?

Haploinsufficiency of the NSD1 gene due to 5q35 microdeletions or intragenic mutations is the major cause of Sotos syndrome characterized by generalized overgrowth, large hands and feet with advanced bone age, craniofacial dysmorphic features, learning disability, and possible susceptibility to tumors. Here, we report on a 14-month-old boy with a reverse phenotype of Sotos syndrome due to the reciprocal duplication of the 5q35.3 region, including the NSD1 gene, detected by array CGH. The phenotype includes delayed bone age, microcephaly, seizures, and failure to thrive. Our case suggests that the gene dosage effect of the NSD1 gene is the likely cause for the reversed phenotype of Sotos syndrome in this patient.

Which gene is responsible for the development of Sotos syndrome?