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#include <bits/stdc++.h>

using namespace std;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;

#ifdef LOCAL
ostream &operator<<(ostream &out, string str)
{
    for (char c : str)
        out << c;
    return out;
}
template <class L, class R>
ostream &operator<<(ostream &out, pair<L, R> p) { return out << "(" << p.first << ", " << p.second << ")"; }
template <class L, class R, class S>
ostream &operator<<(ostream &out, tuple<L, R, S> p)
{
    auto &[a, b, c] = p;
    return out << "(" << a << ", " << b << ", " << c << ")";
}
template <class T>
auto operator<<(ostream &out, T a) -> decltype(a.begin(), out)
{
    out << '{';
    for (auto it = a.begin(); it != a.end(); it = next(it))
        out << (it != a.begin() ? ", " : "") << *it;
    return out << '}';
}
void dump() { cerr << "\n"; }
template <class T, class... Ts>
void dump(T a, Ts... x)
{
    cerr << a << ", ";
    dump(x...);
}
#define debug(...) cerr << "[" #__VA_ARGS__ "]: ", dump(__VA_ARGS__)
#else
#define debug(...) 42
#endif

const ll MOD = 1000000007;

ll rev(ll a, ll b = MOD - 2)
{
    if (!b)
        return 1;
    if (b & 1)
        return (a * rev(a, b - 1)) % MOD;
    ll temp = rev(a, b / 2);
    return (temp * temp) % MOD;
}

main()
{
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);

    int Z = 1;
    // cin >> Z;
    while (Z--)
    {
        int n;
        cin >> n;
        vector<pii> V(n);
        for (auto &[x, y] : V)
            cin >> x >> y;
        reverse(all(V));
        vector<pii> G(n, {-1, -1});
        set<pii> S;
        for (int i = 0; i < n; i++)
        {
            auto t = S.upper_bound({V[i].first, -1});
            auto en = t;
            while (en != S.end() && (*en).first < V[i].second)
            {
                if (G[(*en).second].first < 0)
                    G[(*en).second].first = i;
                else
                    G[(*en).second].second = i;
                en = next(en);
            }
            if (t != S.end())
                S.erase(t, en);
            S.insert({V[i].first, i});
            S.insert({V[i].second, i});
        }
        for (auto &[x, y] : G)
            if (x == y)
                y = -1;
        vector<set<int>> T(n);
        vi H(n, 0), val(n, 1), ans(n, 1);
        vector<vi> P(n);
        for (int i = 0; i < n; i++)
        {
            H[i] = i;
            T[i].insert(i);
        }
        for (int i = 0; i < n; i++)
            if (G[i].first >= 0)
            {
                P[G[i].first].push_back(i);
                if (G[i].second >= 0)
                    P[G[i].second].push_back(i);
            }
        for (int i = 0; i < n; i++)
        {
            for (auto &p : P[i])
                if (G[p].second == i || G[p].second < 0)
                    if (T[i].size() < T[p].size())
                        swap(T[i], T[p]);
            for (auto &p : P[i])
                for (auto &x : T[p])
                    T[i].insert(x);
            queue<int> Q;
            for (auto &x : T[i])
            {
                if (x != i)
                {
                    ans[i] += val[x];
                    if (H[x] == i)
                    {
                        val[i] += val[x];
                        Q.push(x);
                        continue;
                    }
                }
                if (G[i].first >= 0)
                {
                    if (G[i].second >= 0)
                        H[x] = max(H[x], G[i].second);
                    else
                        H[x] = max(H[x], G[i].first);
                }
            }
            while (Q.size())
            {
                T[i].erase(Q.front());
                Q.pop();
            }
            // debug(i, val[i], ans[i], T[i]);
        }
        ll sum = 0;
        for (auto &a : ans)
            sum = (sum + rev(a)) % MOD;
        cout << sum << endl;
    }
}