da ist jemand an der Tür, der

there's someone at the door who

→ da

phrase Rare #44,789

there's someone at the door who Introduces a person at the door and a relative clause describing what they want or are doing. The relative pronoun der refers to jemand, which is grammatically masculine in German.

GE: Da ist jemand an der Tür, der dir helfen möchte.

EN: There's someone at the door who would like to help you.

Da ist jemand an der Tür, der Sie sprechen will.

There’s someone at the door who wants to speak to you.

Da ist jemand an der Tür, der euch sprechen will.

There’s someone at the door who wants to speak to you.

Da ist jemand an der Tür, der dich sprechen will.

There’s someone at the door who wants to speak to you.

Da ist jemand an der Tür, der mit dir sprechen will.

There's someone at the door who wants to speak with you.