そしてもう一つは疑わしい結論を出した。

and; and then; thus; and now

now; soon; shortly; before long; presently; already; yet; by now; (not) anymore; further; more; again; another; the other; interjection used to strengthen expression of an emotion (often exasperation)

one; for one thing; only; (not) even; just (e.g. "just try it")

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

doubtful; questionable; uncertain; disputable; suspicious

conclusion

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to take out; to get out; to put out; to reveal; to show; to submit (e.g. thesis); to turn in; to publish; to make public; to send (e.g. letter); to produce (a sound); to start (fire); to serve (food); to begin ...; to start to ...; to burst into ...