<< jSoupLink`
ParseHTML[
"https://www.nobelprize.org/nobel_prizes/physics/laureates/1921/einstein-facts.html",
".laureate_info_wrapper p",
"text"
] // TableForm
It is possible to be more precise:
ParseHTML[
"https://www.nobelprize.org/nobel_prizes/physics/laureates/1921/einstein-facts.html",
"span[itemprop=birthDate]",
"text"
]
{"14 March 1879"}
I don't intend to explain how I figure out the CSS rules but there are a lot of things you can do quite easily with this jSoupLink if you know how. You could write a script that starts from this directory of Nobel Prizes and recursively collect data from all laureates, for example.