He was a contemporary and close friend of Leonhard Euler.
1	He	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	4	nsubj	4:nsubj|7:nsubj	Discourse=context-background:51->49:1|Entity=(1-person-giv:act-cf1*-1-ana-Daniel_Bernoulli)
2	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	4	cop	4:cop	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	4:det	Entity=(1-person-giv:act-cf1*-2,5-coref-Daniel_Bernoulli
4	contemporary	contemporary	ADJ	JJ	Degree=Pos	0	root	0:root	_
5	and	and	CCONJ	CC	_	7	cc	7:cc	_
6	close	close	ADJ	JJ	Degree=Pos	7	amod	7:amod	_
7	friend	friend	NOUN	NN	Number=Sing	4	conj	4:conj:and	_
8	of	of	ADP	IN	_	9	case	9:case	_
9	Leonhard	Leonhard	PROPN	NNP	Number=Sing	4	obl	4:obl:of	Entity=(83-person-new-cf2-1,2-coref-Leonhard_Euler|XML=<ref target:::"https://en.wikipedia.org/wiki/Leonhard_Euler">
10	Euler	Euler	PROPN	NNP	Number=Sing	9	flat	9:flat	Entity=83)1)|SpaceAfter=No|XML=</ref>
11	.	.	PUNCT	.	_	4	punct	4:punct	_
