remove_if from vector of strings

I need to remove some elements from vector of strings if those contains a certain word. How can I write the unary predicate for remove_if. Here is code sample:

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>

using namespace std;

bool remove_if_found(string word)
{
   // ???
}

int main()
{
vector<string> data {
                        { "the guitar has six strings" },
                        { "the violin has four strings" },
                        { "the the violin is more difficult to learn" },
                        { "saxophones are a family of instruments" },
                        { "the drum is a set of percussions" },
                        { "the trumpet is a brass" }
};

cout << data.size() << endl;   // output: 6

remove_if(data.begin(), data.end(), remove_if_found("violin"));  // error

cout << data.size() << endl;    // output should be: 4

return 0;
}

Thank for any suggestion.