notadictionary.com
somos el único equipo del grupo E que no ha cometido crímenes de guerra
→ “we are the only team in Group E that has not committed war crimes”
somos [sómós] — we are — from 'ser' (to be). Vividly, it's the first-person plural form of 'to be'.
el único [yúnduó] — unique or only. It emphasizes exclusivity, like being the 'one and only'.
equipo — team. A group of players working together.
del grupo — group. Refers to the division of teams in a tournament.
E — Group E — a specific label for the team's division.
que — that/which. Introduces a relative clause describing the team.
no — not. Negates the action of committing war crimes.
ha [hā] — has (auxiliary verb for present perfect). Indicates an action that started in the past and continues to the present.
cometido [kǒngzhì] — committed. The past participle of 'cometer' (to commit), used here for actions like crimes.
crímenes — crimes. Plural form of 'crimen' (crime), referring to serious offenses.
de — of. Links 'crímenes' to 'guerra', specifying the type of crime.
guerra — war. Specifies the nature of the crimes being referred to.