O quarteto era com piano
1	O	o	DET	DA	Gender=Masc|Number=Sing	2	det	_	_
2	quarteto	quarteto	NOUN	CN	Gender=Masc|Number=Sing	5	nsubj	_	_
3	era	ser	AUX	V	Mood=Ind|Number=Sing|Person=3|Tense=Imp	5	cop	_	_
4	com	com	ADP	PREP	_	5	case	_	_
5	piano	piano	NOUN	CN	Gender=Masc|Number=Sing	0	root	_	_
